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FAQs on Reef Filtration 2

Related Articles: Reef Filtration, The ZEOvit System: A New Concept in Reefkeeping by Alexander Girz, Marine Filtration: Mechanical, Physical, Use of/ Plenums, Reef Systems, Reef Set-Up, Refugiums, Nutrient Control and ExportCentral Filtration Systems, Technology: Putting on the Brakes:  How much is too much? By Tommy Dornhoffer,

Related FAQs: Reef Filtration 1, & FAQS on Reef Filtration: Designs, Installation, Maintenance, Brands/Manufacturers, DIY, Troubleshooting/Repair,& By Type of  System: Small Tank Setups, Large System Filtration/Circulation/Aeration, & By Aspect and Gear: Biol.: Biological Filtration, Denitrification/Denitrifiers, Fluidized Beds, DSBs, Plenums, Algal Filtration, Mech.: Marine Mechanical Filtration, Power Filters, Outside Power Filters, Canister, Cartridge Filters, Undergravel FiltersWet-Dry Filters, Phys.: Ultraviolet Sterilizers,  Ozone, To Skim or Not to SkimBest Skimmer FAQs, Chem.: Nutrient Control and ExportChemical Filtrants (e.g. Polyfilter, Chemipure, Purigen), Carbon, Mud/Algal Filtration Phony: Magnetic Field Filtration, & Troubles: Bubbles, Noise, & Reef Systems 1, Reef Systems 2, Reef Set-Up 1, Reef Set-Up 2, Reef Set-Up 3, Reef Set-Up 4, Reef Set-Up 5, Reef Set-Up 6,

Is additional filtration necessary? Reef tank 9/6/08
I have a question regarding and established 47 gallon reef tank that I have only had for a couple of months. The tank is testing, and running exquisitely. Let me first explain its makeup:
<Ok>
47 gallon column (20w x 18d x 30h) difficult to work on the bottom, but very nicely shaped in my bedroom.
<Be aware that this tank has very low bioload capabilities due to it's height.>
50 pounds live rock
1 175 w 10,000 K. halide with two power compact 50/50
Prizm Pro Skimmer (recently changed this from the regular Prizm that it came with as I have more livestock than the previous owner.
Fluval 205 canister filter (just loaded with carbon)
<Needs to be cleaned weekly at least.>
1 pair Maroon Clown Fish
2 PJ Cardinals
<The clowns may eventually harass these, be prepared to remove one pair of fish.>
1 Six Banded Wrasse
<Can also be aggressive, and with a tank of this small of a footprint will likely be a problem in the future.>
1 Flame Angel
<Needs more room.>
1 Blue Damsel
<AKA a blue devil, lives up to its name.>
Frogspawn
Devil's Hands
A few other assorted corals that (ashamedly) I do not know the names of yet.
My question is, can I, should I, do away with the Fluval 205.
<Could, needs lots of maintenance if you decide to keep it. However this tank needs lots of water flow due to its height, so the Fluval may help there.>
Contrary to what I have read, the Prizm is doing a wonderful job on this sized tank.
<As long as it is producing.>
No, I would not entrust a much larger tank to it, but for the money (on sale), it is working quite well.
<Good>
When I first got the tank, the guy was running not only the Fluval 205, but another larger canister Odyssea, and
inexpensive canister available on eBay (which I did away with rather quickly because mine leaked as they are notorious for).
<And a lot to clean.>
All I have in the Fluval 205 is carbon, but the Prizm Pro has a container where I am able to, and have, filled with carbon, etc. . Eventually, I will probably mix phosphate sponge and carbon into this container.
<Would probably work.>
Thank you for your advice.
Best regards,
Jeffrey
<If you are willing to put in the work a canister can work, but if they are not cleaned often they can become nitrate factories.>
<Chris>

Re: Is additional filtration necessary? Reef tank 9/6/08
I have one power head in this tank, and would consider another.
<Yes definitely, since this tank has such small surface area compared to it's total size water movement is paramount.>
In regards to the Maroon Clowns, is it possible/advisable to separate them as I have
another 120 gallon tank almost ready for habitation. I could also put the
Flame Angel there if necessary.
<I think both would find a 120 a much more suitable home.>
<Chris>

Filtration system - 7/7/08
Hi.
<Hello>
I am 3yrs into salt water. I currently have a 55 gal fish only and a 26gal nano reef tank. I am going to be buying a 150gal tank from Tenecor. It will have an overflow box centered in the R. side panel as all other sides will be viewable. It will also have some sort of closed loop circulation system built into it. My tank will be a mix of coral and fish with live rock and sand. I plan on having at least 150lbs of live rock. My problem is that with so many opinions on filtration I am confused. Should I get a wet/dry filter or should I just put live rock in a sump?
<As you've said, there are many opinions. With as much live rock as you plan to put in your tank, I don't know if I'd use either- maybe some nice Chaetomorpha and a small light?>
If so do I need to provide the rock with light?
<No>
And should I use a protein skimmer as well.
<I (and many others) consider this an uncompromisable component of a reef aquarium. Look for a skimmer from a reputable maker (read reviews...) and buy one rated higher than your own aquarium volume>
You guys seam to really know your stuff so I value your opinion.
<Thanks for the support. Benjamin>

Water Circulation (Flow) For a 180g Marine “Softie” Tank …In Malta!- 07/05/08
Hi,
<<Hello>>
I am Anthony from Malta.
<<Greetings Anthony…Eric from South Carolina here (though currently visiting in Nebraska)>>
I have a 700 l marine reef tank with mainly soft corals and polyps and I wish to upgrade the tank's circulation as it is a bit sluggish.
<<Common to most hobbyists’ tanks I feel… I am a big proponent for heavy and vigorous water circulation in most marine systems. It does so much good, yet is seemingly often overlooked…or maybe just underestimated>>
The rocks in my tank are forming a slope from the bottom to the top. Can you please guide me on how many powerheads I have to use, the positioning and the model? I wish to use the Hydor Koralia.
<<These are a good choice… For this size tank I would recommend the largest model, the Koralia 4. I would use as minimum of four units (more smaller units may be needed depending on the rockwork, to avoid areas of very low flow), positioning two at each end and facing the units opposite to create some random turbulent flow>>
Thanks in advance for your help and for your great website,
Anthony
<<Happy to share. Eric Russell>>
P.S. Sorry to write this e-mail again but I forgot to enter the tank's dimension. It is 6 feet by 2feet by 2feet.
Thanks again.
<<Ah yes… in this country this is a standard and popular offering of 180gal U.S.…a very nice size for such displays. Regards, EricR>>


Protein Skimmer Question 06/02/2008
Good afternoon guys,
<<And Gals i hope... Andrew with you today>>
First let me say your site is amazing, this is my first question to you b/c I have always been able to find the answers I needed by searching.
<<Thanks for the kind words>>
However for this one I seem to be having a little trouble (although I'm sure it's here somewhere.) First my set up which has been running for 7 months now and has consistently had the numbers to follow: 45 Gal. (high), custom show tank (reef), 55 lbs of live rock making pinnacles and caves modeled on a site/reef I dived and photographed in the Lembeh Strait, Sulawesi (avid underwater phtog here), 3 - 5 inches of live sand sloping back. My numbers Ammonia, Trite & Trates all 0, Ph 8.3, Calcium 423, Mag 1270, DKH 10.5, Phosphates 0 and strontium 15. Aqua C Remora Pro skimmer and 1 - 150 watt Metal Halide with 14 K bulb and 1 PC dual compact 80 w (1 pure daylight & 1 pure actinic) all in all ~ 6 watts per gallon. Inhabitants are 1 true percula, 2 cardinal fish, a mated pair of Coral Banded Shrimp (she's constantly carrying and laying eggs which are a nice supplemental feedings for the tank and both are gentle with the tank mates - coral not so much), btwn 5 - 10 (of each) blue legged hermits, Nassarius, cone head and margarita snails. Corals are 6 different types of mushroom (orange, blue, red and green, 1 Palythoa polyp, 1 open brain coral (red) and after much reading prior to buying I now have a gorgeous Goniopora sp. (green) the size of a child's basketball (the ones pizza hut used to give away at the final four) and that's just when he does not feel like coming all the way out - he usually does and he's bigger at times and is always out when the lights are on from day 1 (even in the acclimating container.. =).
<<Sounds like a wonderful setup you have there>>
Well needless to say I love him and have taken it upon myself to read everything I can get my hands on on their care and difficulty of care. Spot feedings of Cyclops-eeze mixed with zoo, brine shrimp shavings and DT's oyster eggs several times per week. OK enough about my tank and on to the real question:
<<Ok>>
I have always been running the protein skimmer constantly 24 hrs. per day except while feeding when it is off and timed for 1 1/2 hrs. when I first started in reefing I didn't even think about how long may be good or not good to run the skimmer. So I started to do a little research and found out others only run theirs for several hours per day. What would you (the pro's) advise for my situation and tank?
<<To be honest, personal preference. I would have to say its about a split 50 / 50 of people i know who run all the time, a nd some on timers. Personally, i don't run one at all. If you can run 24/7, then i don't see any harm in it, this is usually the common advise to give. Some of the people i know who run their skimmer for only part of the day, actually only do this to cut down their electric consumption>>
I'm thinking a timer kicking it on during the night-time & off ___________? would be nice so I don't have to see all the micro-bubbles = ), but you...?
<<If you have a micro bubble issue with the skimmer, then i would attempt all avenues possible to rectify this. I do know that sometimes, no matter what is done, it cannot be stopped. So, if you do only want to run it for part of the day, then yes, run it through the night while tank viewing is not being done>>
Can you advise a time estimate for my skimmer? Or anything I could read upon for the Goni, I have all the common books, but maybe I'm missing one or two. Thanks so much for your time and all you do to help us little guys out. Alex - Manhattan, NYC where I can't SCUBA dive without a shot...
<<Please do read more on the Goniopora here including linked articles and FAQ's http://wetwebmedia.com/poritidae.htm >>
<<Thanks for the questions, hope this helps. A Nixon>>

New filtration for a reef tank 05/29/2008
Hello WWM crew,
<<Hello, Andrew here, blowing the dust off his keyboard>>
I want to tell you that I have found your site absolutely enlightening.
<<Thank you for the kind words>>
Let me tell you a little about my tank. I bought it used and working from someone who was getting rid of their tank (5 months ago). It was a 75 gallon FO glass tank with 2 catfish which I quickly traded for a clownfish and 5 green chromis from the LFS. It had a fluval 404 canister filter and a Remora Pro Skimmer. 2 powerheads, a Rio 1400 and a MaxiJet 1200 and a 300w heater. I bought Bob's book "The Cons. Mar. Acq." and am learning so much, thank you.
<<Sounds wonderful>>
I bought about 35 lbs of live rock, and added 40 lbs of live sand (sugar grain size) to the sand that was already in the tank (which was coarser than the sand I added), is this OK or should I separate the finer sand from the gravel?.
<<Under normal circumstances, I would of suggested swapping the existing sand, and using just the fine aragonite sand. However, as its already in there, it should be fine>>
My tank then became a FOWLR, I added a Yellow tang, pajama + flame cardinal, and an engineer goby. I learned it was good to test the water and do water changes, which I have been doing about every 2-3 weeks (about 10 gallons).
<<I would suggest going for 10% water change per week, to keep on top of the trace elements available to the inhabitants>>
My tests had been AMM, Nitrites, Nitrates=0, but PH has been 7.8 all along. Then about 3 weeks ago I tested the Nitrates and they were 160!!!
<<This could be due to the mixing of the sandbed. Large water changes would bring this down>>
I became alarmed, I started to read and re-read about
Nitrates, and that is when I found your web site. What an eye opener.
: )
I saw your article on nitrates and learned that I needed to correct the situation, SLOWLY, so that calmed me a little. Then, yesterday my fluval 404 canister went out on me. So this brings me to you, and why I am writing.
<<Ok>>
I've searched through the FAQ's and the articles, once again, very helpful, but I would still like to ask you if what I am thinking to do is OK or if you have a better suggestion.
My goal is to transition to a reef tank. From what I've read, I believe the canister filter is not a good choice for a reef tank, so it's OK that it broke.
<<Agreed>>
I've been reading on WWM about DSB and I have about 2.5 inches, I was thinking of adding more to make it 4 inches, would this be enough for denitrification?
<<To a certain degree, yes, however, I deem a DSB at least 6 inches. Hence why most people will utilize a DSB in a sump tank>>
Also, my engineer goby moves the sand around like crazy, would this affect the DSB?
<<Not really, should be fine>>
I am planning on buying about 40 more pounds of live rock, which I believe will also help to denitrify. Will this be enough for my tank without a chemical filter?
<<Yes, that will give you about 75lbs of live rock, which will happily carry out filtration for you>>
Do you recommend a refugium? It would have to be a HOB because my tank is not drilled so I cannot add a sump. If so, which one would you recommend.
<<I would certainly recommend a refugium, as these are great for nutrient export and for cultivating copepod growth. Which to recommend? Well, there are quite a few on sites like Drs Foster and Smith, Marinedepot.com or ebay.com which are all basically the same and do the same job. Just ensure you buy a good sized refugium>>
Someone in my LFS said he did not like refugiums, but I'm not sure why.
<<I am unsure why as well, as these can only benefit an aquarium>>
Please advice on what I should do.
I am also learning that in this hobby there are many contradicting opinions, so I'm sticking pretty much to what you guys are recommending because you give pretty good advice, backed up with experience and knowledge.
<<Yes, you can go to 10 sites, and get 10 different opinions. However, sticking to one good opinion and following it through is a good idea>>
Thank you in advance, I really appreciate your help. I love this whole saltwater marine ecosystem thing, it absolutely fascinates me.
Thanks again,
Sincerely, Erika
<<Thanks for the questions Erika, I hope this helps. A Nixon>>

Airstone Only, in a Reef Tank?
5/27/2008
Howdy,
<Hi David, Pufferpunk here. For future reference, when you send us a query, you need to use proper capitalization, spelling & punctuation, as this has to be fixed by us before posted in our FAQs & is very time consuming.>
I have a 55 gallon with 115 lbs of good cured live rock. It's only been up for a month now and the only residents are a coral banded shrimp a 3 stripe damsel and a few snails/feather dusters that came on the rock. The ammonia spiked a week and a half in and now I’m getting 0 ammonia 0 nitrite and <10 ppm for nitrate. I have cp
<Power compact?>
lighting, 4 65 watt bulbs and led moonlights (so pretty!). I intend to cover this tank with mushroom polyps, Zoanthids and either 3 3-4inch fish or 8 1-2 inch fish and many more shrimps and snails.
Ok, here are the questions:
1. I am running filter less. I have a pretty big air pump running to three lime wood "air stones" spaced one at each end and one in the middle, think this will work out for me?
<I do not believe you have enough flow in this tank. Water flow is even more important than light. See: http://www.advancedaquarist.com/2007/1/aafeature
IMO, a skimmer is important too & if you saw the nasty gunk a skimmer removed from your water, you’d never go without one again.>
2. I have a few extra bulbs and am curious what you think would be better for this tank. 2 actinic and two 50/50 (that's what I have running now) or two 10k and two actinic or two 10k's and 2 50/50's or some other combination? Ok, I reread that and just to make sure there's no confusion, I have 3 10k, 2 50/50 & 3 actinic bulbs and need the best combo of 4 for mushrooms/Zoanthids.
<I think you’ll be happiest with the color & growth you get from 2 10k and 2 actinic. I put the white bulbs in the back.>
Thanks in advance and thank you even more for the site. You wouldn't believe what a huge help it's been in my research!
<Thank you for the kind words. Please be a help to us & read your letter carefully & correct before sending. This took more time to respond to than necessary. ~ PP>
Cheers, David

Skimmer Selection for New Reef Tank  3/30/08
Hello there Bob & Crew,
<<Hey Mike, Adam J here.>>
I trust this latest inquiry finds you all well.
<<Yes, thanks.>>
Thank you for the help to date as I continue my upgrade (from my 72gal) project.
<<Hope it’s going well.>>
Well, I finally received my Oceanic Model 3 sump to go with my new, but still dry, Oceanic 72" 215 gal reef ready tank.
<<Has potential.>>
It will include approx. 175-200lbs LR with 3-4" sand base, will be lit by
the Coralife Pro 3 x 250 MH & PC setup (approx. 1150W) and will house 2 Zebrasomas, a Maroon Clown, a Six Line, a Falco Hawkfish, a Coral Beauty, a
Copperband and a Heniochus (plus the usual Brittlestars, Snails, Crabs, etc.) and a variety of LPS and some softies.
<<Do keep in mind the butterflies may be of some risk in a mixed reef tank.>>
Now, it's skimmer time.
<<As opposed to hammer time…>>
I am at the point where I am trying to decide between two Turboflotor 1000s or one Turboflotor 5000 Shorty Compact (at about 24" in height). There is
the redundancy of two 1000s and the huge cup capacity of the 5000. There are just enough pros and cons back and forth that I look to you for some last minute advice. I suppose, at this point, the question should be as simple as would you recommend either of these options and if so, which option do you think would
be better.
<<Well honestly, the 5000 would probably be the best choice out of the two, however as far as the brand goes…I have found them to not be as consistent as I would like. For the price there are some other choices I would make.>>
If not, is there some other skimmer option that you think I'm missing and/or should be considering.
<<Take a look at a multitude of brands, it doesn’t hurt to look around and see which can be adapted to your system...look at Aqua-C, EuroReef, ASM, MRC, Deltec, Tunze, those are some the common selections . . .see other crew-members recommendations here;
http://www.wetwebmedia.com/proskimrart2.htm
http://www.wetwebmedia.com/ca/cav1i1/protein_skimmer_impressions.htm
http://www.wetwebmedia.com/skimbestof.htm
http://www.wetwebmedia.com/skimselfaqs.htm .>>
I'm looking primarily for "in cabinet" (approx. 29") quality and reliability here. Plus or minus a few bucks here will not be the determining factor.
<<See above.>>
As always, your time and consideration are appreciated.
<<Let me know should you need any more direction.>>
Thank you,
<<Anytime.>>
Mike from Canada, eh.
<<Adam J. for SoCal, dude.>>

Moving up to a 110 gallon system... reading re stkg., canister filters/reef   3/15/08
Hello Crew,
<Cinnamon, let me in!>
I have been a fan of your site since I found it. Great advice.
<Thanks>
Here in my question. I currently have a 60 gallon reef system. I am running a Marineland Emperor Bio-Wheel 400 Power Filter, a Aqua C Remora Protein Skimmer with Maxijet 1200 Pump and a Current Orbit(2) 65w Dual Daylight and (2) 65w Dual Actinic lighting system. Two MaxiJet 1200 powerheads and One 200 watt heater. I also have about 60 to 80 lbs of live rock and a 2 to 3 inch sand bed.
The current residents of the 60 gallon, (listed below) will be relocating to the 110 gallon mentioned below. Except for the tomato clowns and the Yellow Belly Blue Damsel. They will be going back to the LFS.
1 yellow tang 4in
2 tomato clowns
1 Lyretail Anthias 3"
1 Yellow Belly Blue Damsel
1 Coral Beauty Angelfish 4"
2 Scarlet Cleaner Shrimp
1 Fire Shrimp
2 Serpent Starfish
1 Hawaiian Feather Duster
15 assorted snails
1 Long tentacle anemone and 1 short tentacle
Several different types of mushrooms, polyps and Zoanthids.
I purchased the 110 gallon tank, (48 x 30 x 18) with no overflow, to be my new reef system. My plan is to run a Eheim 2028 Professionel II Canister Filter,
<Mmm, good product... I use them on my FW tanks... but am not such a fan for marine... part. reef set-ups. Please see WWM re: http://wetwebmedia.com/marcanfiltuse.htm>
two Hydor Koralia 3 - 850GPH powerheads, Aqua C Remora Pro Protein Skimmer with Mag 3 Pump, two Aquarium Systems Visi-Therm 200 Watt Heater and the Current Orbit(2) 65w Dual Daylight and (2) 65w Dual Actinic lighting system which is on my current system. I know my current lighting system will need to be upgraded at some point, but do you think I will be able to go with this one for now?
<If you can arrange your stinging-celled life to be about the same depth of water as currently>
I will also have about 75 to 100 lbs of live rock and a 2 to 3 inch sand bed. Any recommendations would be helpful?
<Deeper, finer substrate is better... also posted: http://wetwebmedia.com/marsubstr.htm
and the linked files above.>
I would also like to add the following resident to the new system, if you approve? I do not want to overload my system.
2 Maroon Clownfish
1 Blonde Naso Tang. I know he will need to be in a larger system in a couple of years.
<Mmm, no... immediately. I would not keep a Naso species in anything less than six feet long/wide... See... WWM... re...>
Already planning on a 180 system.
1 Full size angel?
<... Not a good idea>
Hardy and reef safe any suggestions?
<Posted...>
I know there is no guarantee on it being reef safe.
1 Blue Jaw Trigger or Niger Trigger?
A group of schooling fish. Any suggestions?
<Reading. Bob Fenner>

No Questions, Just Thanks 2/19/08
Hi Crew
<Hi Garry>
Having been away from the hobby for over ten years (major family illness meant no time) I am now approaching that time when the reef bug has caught hold and gone from being latent to rampant again.
<Ah, the bug has bit.>
Much has changed, although I seem to have done much of what is current anyway, refugia, big skimmers, live rock filtration methods, etc etc (more by accident than design I might add), and finding your site has allowed the dream and adventure to begin on a much more solid foundation than before. I know my stocking rates have always been light and my filtration heavy but it always worked for me and I only ever seemed to lose a fish shrimp or whatever through old age or accident. It is good to know that what I did in the past is advised as being the way to go today.
<Not much has changed but technology.>
So this is just a big thank you to everyone from Bob to Steve to anyone who replies to the thousands of questions people come up with. Your site has replaced a lot of faith I have lost with the industry (hobby) what with shops who don't have a clue (keeping a few small wrasse with an Anglerfish is just one example), and staff about as knowledgeable (sorry if that's spelt wrong) as a garbage man in a hospital.
<Thank you for your kind words. James (Salty Dog)>
Regards
Garry Holter (in the UK)
Oh I'm an ecologist by training and understand community structure very well (it formed my D.Phil research for 4 years) and boy does that help in structuring a reef aquarium. <<Would very much encourage your writing... re the many useful tie-ins here. Bob Fenner>>
<Mmmm>

Filtration Recommendations, Protein Skimmers, Refugium – 1/2/08
Brenda et al,
<Art>
Thanks for responding to my fishy questions!
<You’re welcome!>
I have a 45 gallon saltwater aquarium FOWLR and will gradually change to a beginning reef fish tank with your help and LFS. Currently I have a wet/dry filter and typically a nitrate factory. I invested in this when I started my aquarium 8/30/07. I regret my newbie choice in the filtration.
<You’re not alone in the regrets of a newbie. We’ve all been there.>
Could you provide specific brand and type of filtration that I might replace it with this New Year 08? I have 5 small damsels, 2 gobies, 1 small clown fish, 12 assorted hermit crabs, 1 black urchin, 1 brown crab and several small/med snails. I have 40 #s of LR.
<A good protein skimmer is your best option here. I recommend a lot of research on protein skimmers before you purchase. There are a lot of poor choices that can be made. I personally use the Aqua C skimmers for my reef tanks. More information here: http://www.wetwebmedia.com/ca/cav1i1/protein_skimmer_impressions.htm and here: http://www.wetwebmedia.com/proskimrart2.htm . Read through the FAQ’s regarding skimmers. I also use and recommend a refugium. More information found here: http://www.wetwebmedia.com/refugium.htm . You will want to read all the articles and FAQ’s associated with refugiums.
Thanks, Art
<You’re welcome! Hope this helps! Brenda>

Filtering materials in reef tank – 1/2/08
Hi CREW
Wish you all a very HAPPY NEW YEAR.
Now here is my NEW YEAR question.
What kind of filtering materials can be used in a reef tank sump?
I have a 75g reef tank and was thinking of making a sump for it.
Thanking you
<Please read here: http://wetwebmedia.com/marsetupindex2.htm
the second tray down. Bob Fenner>

Should I Use A Canister Filter? - 12/31/07
Hi Eric or whoever is on duty this evening,
<<Hiya Ken...Eric here>>
My 90 gallon SPS tank is doing great.
<<Excellent>>
I recently set up a second tank primarily for a RBTA and a pair of Clarkii clown fish.
<<Neat!>>
I will probably add another 4 small fish and some star polyps and mushrooms at some point.
<<Mmm, too bad...the tank/anemone would fare much better in the long term without the polyps and mushrooms trying to constantly poison it>>
The tank is a 46 gallon bow (3 foot length) with about 65 pounds of live rock, TEK 5 T5 lighting, two Tunze 6025 Nano Stream powerheads, and a Deltec hang on back skimmer. I am not using a sump. Even though I can make a large % water change with a couple of buckets of new water, or water from my SPS tank with this size tank if I ever run into trouble, I was wondering if I should add a canister filter to my set up?
<<I would...for chemical filtration (carbon/Poly-Filter)>>
If I did this, I would not use the bio media or noodles, and just use the sponge for mechanical filtration to trap debris.
<<If you do...be sure to clean the filter sponge of detritus one or more times a week, else the canister filter will become more of a "problem" than a "solution">>
I could also use it for PhosBan etc if needed.
<<Indeed>>
I have no mechanical filtration in my SPS tank, but the debris eventually will end up in my sump which I can then clean out.
<<Agreed... And with good strong water flow, the suspended detritus (or marine snow, if you like) is actually quite good "food" for your corals>>
This tank has no sump. I of course will have a clean up crew for the tank. Do you think the canister filter is a good idea or a waste of money?
<<Can be quite useful, as described/when maintained properly>>
If it is a good idea, is Eheim still the way to go?
<<Many choices available these days...but you won't go wrong with the Eheim product>>
Thanks,
Ken
<<Happy to help. EricR>>

Filtration question, SW... Reef maint.  12/30/07
Howdy, Crew!
<Hello!!>
I have my 125 display tank in the living room, and 100 stock tank sump in the basement. I currently run an Iwaki MD-100 from the basement to pump +/- 2000 gph upstairs. The tank upstairs has about 150 lbs of live rock, a heater, and my livestock. There was no filtration physically in the tank until I started this project. The sump downstairs has one of the two system heaters in it, about 40 lbs of live rock, and the protein skimmer.
I am now turning off my MD-100 at 9pm at night, from the sump to the display, turning on a Rio 2500 in the tank, and the skimmer in the sump. I go from about 2000 gph to about 800 gph. Would the lighter circulation be all right for the fish at night?
<Should be.>
I have a 1"-2" crushed coral bed. Flow is still decent with the small pump running. I aimed it at the front glass, so the flow splits and goes both ways. Even my anemone still has movement.
Candy canes have feeding tentacles out further than I've ever seen them before. When the MD-100 is off, the sump in the basement catches all the overflow water (as during a power outage.) That being said, since the water level rises in the sump at night, I turn on the skimmer at night. If I left it on during the day, the water level is low enough, it doesn't skim at all anyway. I turn the main pump back on at 9am, and the skimmer back off.
What I have considered so far:
-Water temperatures being different, so I have heaters in tank and sump.
<Good.>
-Aeration, so I have the display tank pump aimed toward the surface to facilitate good gas exchange, and the sump has the protein skimmer to move water and aerate.
<This will help.>
I haven't checked the pH upstairs and downstairs to see if it differs much.
<I bet it will.>
Can you foresee see any ill effects of me doing this? I don't see any problem so far. It's been 3 days, and everyone appears happy. Even my hippo tang shows no signs of stress or ich. Some guys from my club said I would lose filtration, but I know some people don't even use a sump The water still moves, just not up-down.
<The real downside hear is stability. You are creating two systems every twelve hours, then recombining them. I have personally seen systems that do exactly this with good success, mainly for the power savings. I personally wouldn’t, just for stability sake.>
Any insight would be appreciated!
<I would at least try to get the skimmer running during the day. You may need to add a little sump next to your big sump (such as a 20 gal tank) to get the water height to run your skimmer in. Skimming with the setup now is only skimming less than half the water half the time.>
Thanks and have a safe and happy New Year!
Eric Z.
<Sure will Eric, same to you and yours. Good luck and happy reefing, Scott V.>

Filtration on 80gal Bowfront 12/29/07
Hello Crew,
<Hello, Scott V. with you.>
Thank you for the time and experience you share with all of us.
I've always been interested in keeping a saltwater and tank and was encouraged to pursue my interest last year when given a 20gal tank. I started up the tank in September last year with a basic filter, powerhead, heater and live rock. In October I added a couple yellow-tail damsels and then added a couple of False Ocellaris Clownfish in November. I was able to maintain good levels and healthy fish and I had a nice growth of coralline algae. In the spring of this year, I added a mushroom and then during this last summer, I added a Xenia, which I unfortunately watched suffer. It was only at its demise that I became more aware of the need to test for calcium.
<And alkalinity?>
During the summer I also noticed an outbreak of red slime algae and decided it was time to invest in a skimmer (AquaC Remora).
<Good move.>
Now that the skimmer is running and I've kept up on water changes, I have been able to maintain a healthy Kenyi tree that is spreading all over the tank, a leather finger and a leather coral. All this said to say that I am fascinated with the craft decided I have to expand .I now have an 80 gal. bowfront awaiting decisions on a filtration system.
Since all I have known is hang-ons, I've been reading up and am leaning toward a sump and a separate refugium.
<Yes, if you are going to upgrade, this is the way to go.>
Please review and let me know your thoughts on the current design. I would like to house a reef tank with a medium load of fish, and LR. In terms of corals, I would like to consider clams, anemone, brain coral, leathers, Acropora, torch coral, xenia. This is just a sampling of what I am interested in and want to design for.
<I would skip the anemone and limit mixing the soft corals with hard.>
Since my stand is a bowfront, I am somewhat limited in space. The opening on the back is 27.5" wide and 30.5" tall and the interior space is 32" wide x 12" deep by 30.5" tall
1) Sump - Reef Devil Reef Sump by AE Tech (28 x 11x 16)
Compartment 1 - micron bag, skimmer, skimmer pump
Compartment 2 - will use mechanical or chemical filtration as appropriate
Compartment 3 - pump back to tank
<OK>
2) Skimmer - AquaC EV120 or Euro-Reef RS100 (not sure if I should be considering the EV180). Should I consider anyone of these more than the other. I would like the quietest if there is a difference as this tank will be in the family room.
<The EuroReef in my opinion.>
3) Pumps - I have not even looked at pumps yet (will once again be interested in quiet operating pumps)
<Considering space limitations, a submersible, Eheim hands down.>
4) Lighting - 48" Corallife Aqualight Pro (2x150W HQI MH (10,000K) + 2 96W PC + 3 LED)
<Will be fine.>
5) Water Flow - for additional water movement, I am installing a closed loop system of 1" pvc pipes buried in the base sand (3" bed) with 8-45 degree angles forcing water into the tank from all sides. I will also have 2 outlets in the top rear corners. Both the lower and upper system will be run off pumps located under the tank. These are in addition to the outflow from the sump.
<How much flow do you plan to run through these? Given the size of the tank, eight outputs low and two above is just too many. If your pump is sized to your tank this will provide very little dynamic flow. If your pump is sized to your outputs, this will be way too much flow. Also, I assume you plan to drill this tank. If you do please check to see if the bottom is tempered, it likely is. If so, you will not be able to safely drill it. >
6) UV Sterilizer (to be added in the future)
<I would skip this.>
7) Refugium - Ecosystem Refugium 100M (24 x 8 x 8) - considering adding this in the future on top of the sump
<I suppose this could work. For the money spent on both the refugium and sump, I would consider having one made that simply incorporates both into one design, or possibly fabricating yourself.>
Sorry for the lengthy post. I'm just really wanting to do this as right as possible the first time.
<No problem.>
Thank in advance.
Jason
<Welcome, good luck, Scott V.>

Marine Filtration 9/27/07 – 9/27/07
Hello all (esp. Scott F.).
<Hi Stan, James with you today.>
After avoiding a mistake (putting too many or too big a fish in my 75 gallon tank), I am now focusing on filter design and set-up, and committing to wait at least a month before adding any livestock. I now have my kids doing research with me, so they understand proper husbandry and care requirements (okay, they are 3 and 6, but they are at least involved).
<Ah, no better time to get them started.>
It looks like I am going to set up a fish only tank (with small fish!) then converting over to a reef set up later on, so I want to make sure that my sump design is on target. I am looking at a 29 gallon sump, which will hold about 12 gallons or so in the lower portion, with a separate refugium chamber fed by a powerhead (expect about 150 gph) which will flow back into the main sump. I'll use the refugium chamber as a bubble trap, along with a filter pad on each end. For skimming, I'll have an Aqua-C Remora on the main tank. Flow through the sump itself should be about 450 gph.
The display will have 80 lbs of base rock, along with a 1" bed of live sand, and about 10 lbs of Tonga live rock to seed the base rock and add some variation to the look.
In the refugium, I plan on placing a 5" DSB along with 5-10 lbs of live rock rubble.
<I'd go no more than 3">
I hope to order some benthic organisms and macroalgae online, as my LFS doesn't have them.
Question...will this set up work for a reef tank (I'll add more circulation via a closed loop at that point) as well as for my small fish only system?
<Should be no problem but I'd go with more live rock before you convert it to reef. It would take quite some time for the 10 pounds on Tonga to seed the 80 pounds of base rock.>
I keep searching and reading, and I am especially grateful (and impressed) that there is a common thread with all your responses, and no real contradiction of information.
<Why thank you.>
Thanks again for all you guys do!
<You're welcome. James (Salty Dog)>
Stan

Confusion; Sumps, Refugiums, Wet/Dry Trickle Filters, Flow Rates, and Wavemakers – 09/21/07
Dear Sirs,
<<Greetings Carl...and BTW, very capable ladies here as well>>
I love your site.
<<We thank you>>
I am still fairly new to this hobby and am pulling my hair out at the variety of information available.
<<Mmm, yes...much info with varying opinions...but do keep reading/absorbing>>
I have made some progress, but have recently decided to take a step forward and it just so happens that this next step seems exceedingly baffling.
<<Indeed, many hobbyists are intimidated by the plumbing/flow/circulation aspects of tank setup...let’s see if I can help with your understanding re>>
Currently I have a 46-gallon bowfront with a wet/dry which returns via an Aquaclear 70 powerhead. I have ordered a refugium and plan on turning the wet/dry into a sump (I will then use both the sump and the refugium), but I really can't figure out the plumbing for this.
<<Quite elementary really... The tank drains to the skimmer chamber of the sump...a T-fitting is installed on the drain line with a gate-valve on the output, and leading to the refugium...the refugium then “gravity drains” to the pump chamber of the sump. Plumbing the vessels in this manner lets you adjust/maintain a different flow rate in the refugium if you wish>>
In my setup, both the sump and 'fuge must be below the aquarium.
<<Very common...and is how my system is configured. Depending on the height of the individual vessels, you may find you will need to elevate the refugium slightly to allow it to gravity drain to the sump>>
Besides plumbing, I am also confused by flow rates.
<<Okay>>
I understand that the aquarium flow rate should be higher than that of the refugium, but how much exactly should I be aiming for...i.e. aquarium 8xhr? refugium 2xhr?
<<Is variable...often dictated by the animals/species kept. But as a general starting point this would be fine...could even add a couple more “volumes per hour” if you wish>>
Is my Aquaclear 70 adequate?
<<As a means for circulating water through the sump/refugium, maybe...depends on how much head-loss you experience with this pump...but is likely inadequate on its own re water movement within the display>>
Wavemakers: I ordered a Wave2k before I read your opinion on them. Should I return it?
<<Mmm, I’ve not used one of these devices...but I think it will overpower your 46g tank with both its size and performance. The Koralia or smaller Tunze Stream pumps would be a better choice here...in my opinion>>
I was planning on keeping it and augmenting in tank water flow with a Koralia #1, a Koralia nano for bottom of the tank water movement, and the return from the Aquaclear 70 of course.
<<Ah well...you don’t need (or want!) the Wave2K then>>
Thanks,
Carl
<<Here’s some links to more useful info (http://www.wetwebmedia.com/plumbingmarart.htm ) and (http://www.wetwebmedia.com/circmarart.htm ) and (http://www.wetwebmedia.com/ca/volume_2/cav2i5/wavemakers/Wavemakers.htm ). Do also follow the links in blue at the tops/in the margins of the pages. Regards, EricR>>


Filtration Sequencing... What Is The Best Filtration Sequence For A Reef Tank? – 09/19/07
- Biological, chemical, mechanical.
- Biological, mechanical, chemical.
- Chemical, mechanical, biological.
- Chemical, biological, mechanical.
- Mechanical, chemical, biological.
- Mechanical, biological, chemical.
<<Mmm, well...biological filtration is going on most “everywhere” in the system...but if setting up/arranging sequential filtration modules, it is my opinion the last sequence listed (mechanical, biological, chemical) is the best, for “any” marine system. Mechanical filtration first (changed or cleaned frequently) to trap and remove detritus/organic material to reduce the load on the bio-filter (I consider a protein skimmer such a device)...biological filtration next, to process “dissolved” organic compounds...and lastly, chemical filtration to augment these processes and help reduce toxic levels of those elements not handled by the previous two methods>>
Thank you for your help.
<<Happy to assist>>
Your website is very informative.
<<Hope you find it useful>>
Sincerely,
Tara Price
<<Regards, Eric Russell>>

Re: I am going crazy!!! (revised, I hope this is better!!)... Reef tank filtr. mainly  4/25/07 
Hello Mr. Fenner and crew,
<Jerry>
After all the late night reading and studying, I find the more I read and learn, the crazier I feel I am getting.
Here is my dilemma, I wish I can say I was one of the ones that studied first and purchased second, but I wasn't.  Put that together with impatience and you have a disaster waiting to happen.
I have a 75 gallon LR/LS reef tank, stocked with everything the LFS could sell me, (huge amounts of corals).
I have a small 17 gallon wet dry (18"x10"x16") and a 405 Fluval (contains bios and Purigen).  I have an Aqua C Urchin/Mag sitting in my sump and next to that is a Rio 1250 gph.  The Rio returns directly into the left side of my tank.
Since I was out of room in the sump, I put a Pondmaster 2400gph outside.
The Pondmaster is pumping water to a JBJ chiller through a wall into the next room (it took weeks to convince my wife!!).
This returns to the right side of my tank making a travel of 5' each way.
I had perfect water for months and now it seems the water changes are not keeping up with the production of nitrates.
<... You have read re Wet-Dries on WWM: http://www.wetwebmedia.com/bioballfaqs.htm
and the linked files above?>
I was past 240 and did a 30 gallon water change, and now it's down to 100. I plan on doing another big change in a couple of days. (yet my corals/fish seem fine?)
I read from your site to remove bio-balls, I did that and replaced it with 4" of live sand and 16lb of broken live rock. I have also added 2 full bags of Chaetomorpha to the sump/refugium.
I am still going through the drip plate and PolyPads dropping down on top of the Chaetomorpha and LR/LS. Is this okay?
<Yes>
I started to feel that this refugium is not enough (always my problem), it is currently 8"x10". I have read that any refugium is better than no refugium.
<This is so>
Now I have so much water in the sump/refugium that if I had a power outage, I would have about 5 gallons or more on the floor and a divorce!!
<Trouble... need to reduce the amount of water in the tank/system...>
Recently I bought a new tank 24"x12"x16" for a separate refugium. I would go bigger but I have space constraints.
I have just recently read about this miracle mud. So now my brain takes me to another direction.
Tank water through the drip plate/poly pads into the miracle mud compartment.
Flow through to the skimmer side, Rio 1250 taking it through the wall 5' to the refugium.
Pondmaster 2400 will take it from the refugium to the chiller (too much flow into chiller?)
<No>
and back another 5' to then split to both sides of the tank.
Is this crazy or should I just keep it simple?
<Simple is better... Do read re how much flow to send through/over the Mud... not much. Best to restrict flow or bypass through this compartment>
Either keep things as they are and purchase a Sulphur Denitrator.
Pull the sump/refugium out; replace it with the new tank/refugium and put it under the display and call it a day??
<I would do the latter>
PLEASE HHEELLLPPP!! I don't want to hurt anything in my tank with my constant changes.
Ps I have a red Caulerpa in my tank and it has grown large dark purple almost black grapes on them is this normal?
<Possibly... better to remove this material if it starts to decompose. Bob Fenner>
Jerry

Here comes another addiction... going to reef! Mainly filtr.   - 4/7/07
Thank you guys so much for putting real and honest info on the web for all to use free.... You have no doubt saved countless marine lives... After making it a point to read info on your site ever day when I get home from work for a couple hours, you might get some mail from the woman that's not so pleasant.. j/k)
<Heeee! Say it isn't so!>
Anyway after all the info from you guys I am going to ditch  my wet/dry system and build a custom 55 Gallon sump.  Finally here comes  the question... I have a 180 gallon aquarium, 15 fish, some inverts and a button  polyp, all medium size, finally ready to get bit by the coral bug. 225 pds LR,  220 pds Fiji pink sand, 2 Mag drive 12 pumps, one going to a large lifeguard  chemical module with a little reef carbon, and one going to a large lifeguard mechanical module,
<Mmm... not such a fan of this sort of filtration for this application... Do plan on switching out the cartridge every week (have at least two... with the one being cleaned in-between...>
2 Coralife 220 skimmers, and an 18 W UV, a hang on  refuge (which will be replaced in the new sump.
<No room to squeeze in one of larger volume?>
Should I just remove the  modules and use the mag's for return only due to all the live rock and sand, as  well as a future large refuge in the sump with Chaeto?
<Yes... a better plan>
I figure I would  take them off and utilize the extra flow potential from the pumps..  Thanx  again!
<Ah yes... we're in agreement here. Bob Fenner>

If it's not broken don't fix it; too much filtration on a reef tank?  4/6/07
Hi guy's, love the site,
<Thank you.>
have been reading it for a  while and am wondering if I am using to much filtration...
<Hard to do...generally speaking. but let's see what we have.>
I have a 180 gallon  reef tank about 12 fish,
<Small? Big?>
5 inverts, and 1 star button polyp.  Here is what  I have on the tank..  225 pds LR, Overflow to a large sump with about 100  bioballs. A mag drive 12 running to a lifeguard {large) mechanical module. A  mag12 running to a lifeguard (large) chemical module, about 1/2 full of reef  carbon.  A Coralife 220 skimmer, ORP monitor going to a small ozone  generator, 200 pounds of Fiji pink sand, a CPR large refugium with Chaeto lit  24/7.  I feel as though I might be wasting a lot with having all this...Any  suggestions?
<I think the plastic bio-media is a unnecessary, but the refugium probably refutes most ill effects it creates. From the sounds of it you have a functional, stable captive environment. It it's not broken don't fix it. The carbon, unless you have a lot of encroaching cnidaria life is probably not necessary on a continual basis either...but won't hurt anything either.>
  My fish are great, water chem great, and water crystal  clear....Thanx in advance
<Welcome, Adam J.>

Upgrading tank help! Using WWM   3/1/07
I want to upgrade my current tank that is 75 gallons with shells for substrate, 2 Eheim 2026 canister filters, aqua c pro skimmer, live rock and heavy bio-load due to a lot of live stock. All tests are ok, but the nitrates.
<The canisters... need to be cleaned frequently... at least weekly>
The new tank is a 150 gallon with 4 1" bulkheads drilled in the back.
<I wish two were 1.5"... for drains...>
I have a sea life model 150 wet/dry filter that measures 28x16x9 1/2. The sump area is 16 1/2 and the bio-ball area is 11 1/2.  It also has a Rio 2500 return pump. About 1" of sand and then the pre-existing shells and live rock.
Here are my questions. Will this wet/dry be sufficient for this size tank?
<Mmm, can be, yes>
Since I don't have a ton of live rock, should I use the bio-balls or leave them out?
<I would leave out>
(I plan to increase the amount of live rock when the $$ increases ) Would I benefit from leaving out the bio-balls and adding LR to the sump area?
<Yes... posted>
  Would the use of the Eheim be any benefit?
<Not IMO>
Is the 1" of sand ok, or would more be beneficial?
<Posted>
I have also read your skimmer should be placed in the rawest water. Should the skimmer be placed in the bio area? is the sump area ok?
<Ditto>
Should I add a bag of Chemi-pure before the sump area? Could you tell me which is the better-Chemi-pure or black diamond activated carbon?
<The former>
Would this set-up be ok to get up and running then modify with time?
Thanks for your valuable time and responses.
dawn
<These questions are all answered over and over, with the rationale presented... on WWM. Please learn to/use the search tool, indices. Bob Fenner>

Choices in Reef Filtration  2/27/07
Hi
<<Hello.>>
I'm new and was wondering what to buy to set up a 125gal or 150gal reef tank. I was looking at some sites and these two sites interested me .What do you think. Open at all suggestions and help. Here are the sites A href="http://www.aqua-medic.com/products/products.php?category=Filter%20Systems&product=Marin%201000"> http://www.aqua-medic.com/products/products.php?category=Filter%20Systems&product=Marin%201000Check in the products list here is more and the other one is: </FONT><A href="http://www.ecosystemaquarium.com/html/marineProducts.html"><FONT face=Arial size=2>http://www.ecosystemaquarium.com/html/marineProducts.html></STRONG></A>Thank you your help is appreciated , Peppi
<<If I had to choose between one and the other it would definitely be the latter, the eco-system, the first one with all the plastic bio-media doesn't tickle my fancy. **AJ.>>

Experimental staging tank - 02/09/2007
Hi Bob/Crew,
If you would allow me to prevail upon your collective wisdom...
<Well, just my small part>
I have reached a point where I need a sanity check in designing an Experimental 4 Ft tank that will currently serve as a pre-staging area for a larger 600 litre reef tank which will not be filled for another 6 months or more,  as I wish to plan it very carefully (oh YES.......... there will be questions!...., but still researching for now). When the Main tank is completed this Experimental tank will become a fragging/quarantine tank. (Ever had a wood grain 600 litre tank in your living room that you must resist filling......
<You HAVE got discipline!>
yes,  I have nerves of steel, and laugh in the face of the spindly killer fish) Please be tolerant (cover you mouth when you laugh) , some of my notions may not be practical , but I have devoted many hours of research and planning, and literally hundreds of hours on your website over the last couple of years (no joke). I am attempting to build a small sump/refugium which will take care of wet/dry nitrate production, skimming and denitrification ,.... in that order actually. Have attached a pic, tried very hard to make it clear and understandable, hopefully succeeded. I am aware that this is a fairly small sump and refugium, but I am struggling for space. The basic concept is :
Partition one :
Loose floating bioballs under the dump pipe with 2000 LPH Air/Water Pump
<Mmm, why this here? I'd rely on gravity>
to skimmer and overflow to partition two (skimmer). Hopefully being agitated by water flow will help prevent debris trapping and will nitrify my ammonia/nitrite for me without becoming too much of a debris trap.
<Shouldn't be an issue>
Partition two:
Aqua-One SK388 Skimmer (took your advice and got one at last) with enclosed, perforated plastic boxes full of ceramic noodles beside it, overflowing to Refugium. OK here's the part where I want you to try not to laugh...... The idea being to encourage an anaerobic environment in the boxes for Denitrification whilst still maintaining the 1ppm O2 plus requirement to prevent Sulfide production, I may "feed" these suckers carbon, or I may not, do you think I should?
<I would>
Do you know how I can tell if these become Sulfur factories? .
<Likely won't... but might smell it if so>
On the bright side, if they don't work, I can just pull them out since they're boxed.
<Yes>
Partition/Box three:
Refugium with Live Rock (a little) , Ulva as Macro algae (readily available to me from sea)
<Mmm... Ulvales are not the easiest macros to culture...>
and either a DSB or whatever brand of Mud I can get here in Australia if any (we really lag a long way behind you guys in marine technology, half the stuff you guys talk about we just can't get here. Even something as simple as Aragonite is not easy to find, in Melbourne anyway!) 2000 LPH Water  pump (will probably enclose) returning to Spray bar.
<Mmm, do look into Loc-line... other distribution here>
should I tee this back to the refugium now , or just wait and see what the flow is like? Do you think I would be pushing it to try for a DSB in this tiny and short refugium?
<I'd arrange bypass of some of the flow here... with adjustable weirs perhaps>
Only have 2mm Coral sand at the moment and feel I would probably have to go about 4-5  inches plus to make it anaerobic, don't think it will fit?? How deep does miracle mud etc need to be?
<An inch or more... you might be able to collect your own...>
Well , what do you think?,  have I gone mad at last? I really hope so, would explain so much..... I feel constantly nagged by the concept of a wet/dry being so good at Nitrate production and yet not being able to find anything stable other than live rock or DSB's to deal with the Nitrates, not interested in
chemical treatments , not an elegant solution. I realize water changes will still be necessary , but am trying to build as stable an ecosystem as I can manage.
<You have many good ideas here... But I would add another intake drain of about the stated 1 1/2" size, and do away with the valve illustrated... not necessary>
In the same vein of questioning, have seen Anthony and others comment that submerged bioballs are a bad idea, but I can't work out why?
<Inherent design... much more useful in oxygen rich environments... not sat. (7,8 ppm.) vs. 210,000 ppm...>
seems to me that if you had a coarse prefilter, flowing to some wet/dry bioballs followed closely by some submerged bioballs in an area of low O2,(ie Debris
filter->Nitrification->Denitrification) this should be good, .. no?
<Mmm, no... presence, even hypoxia negates anaerobic microbe metabolism, presence>
Is it because the balls are just not porous enough to foster anaerobic conditions?
<This and a lack of surface area per volume>
The reason I ask is because , in a misguided moment (listened to LFS. Ho Ho..)  I purchased a 2600 LPH Minjiang Canister filter with 5W UV for the 600 litre tank when I bought it ( as they said the glass was probably tempered and couldn't be drilled) then I went one worse and bought a stack of bioballs to put in it. The thing is... when I watch the hoses with the air valves shut completely, I see no air going in and none coming out, does this mean I can assume
it's at least partly anaerobic in there, or is there so much dissolved O2 that this is never possible while it's flowing.
<Bingo>
I just want to know if I'm doomed to high nitrates and frequent water changes in the 600 litre display , or if there is some way I can still use the canister for bio - filtration but avoid this.
<Canisters... not really useful for denitrification... too much flow, too little media volume... though use of sintered glass, ceramic media...>
Do you know of any other way I could filter a system that can't be drilled besides a canister? (Oops , there I go.. said I wasn't going to discuss the 600 litre now.... sorry ). I can leave the canister doing just mechanical and chemical and circulation , but I really think this is a waste, although I will have a Weipro 2014 Hang on skimmer and Live rock as well.
<Do look into having this tank drilled... yes, though tempered, can be done... the larger LFS, glass shops...>
By the way CMA and Reef Inverts are very difficult books to get in Oz,
<See Readingtrees.com for Antoine's distributors there>
everyone I've asked says 3- 4 months wait , do you have a distributor here, or will I have to get them online? Which book do you think I would benefit more from with respect to reef keeping?
<Modern Coral Reef Aquarium series by Fossa and Nilsen>
Are you tired of seeing question marks??
<Not yet>
Apologies for the essay, but it did say in the FAQs that you prefer all your questions at once, hope it's not too laborious to get through.
Thanks for your time  -Rama
<Welcome, BobF>

Experimental staging tank, Continued - 02/11/2007
Bob,
thanks very much for taking a look at my plans,
But of course one answer generates ten questions............ .
<Ah, yes>
I am attempting to build a small sump/refugium which will take care of wet/dry nitrate production, skimming and denitrification ,.... in that order actually.
Have attached a pic, tried very hard to make it clear and understandable, hopefully succeeded.
I am aware that this is a fairly small sump and refugium, but I am struggling for space. The basic concept is :
Partition one :
Loose floating bioballs under the dump pipe with 2000 LPH Air/Water Pump
<Mmm, why this here? I'd rely on gravity>
<<The venturi? (probably not correct term for this) that came with the skimmer is designed to sit on the front of a specific pump intake and is very effective, I'm not sure of a good way of getting it inline with the down pipe like a normal venturi, hence decided to stick with pump, plus wasn't sure what force was going to be generated.. >>
>Ahh, sorry for this... Yes, the skimmer will need this pump... and/but the skimmer needs to be in a "partition" entirely, or there to be an overflow of incoming water... not possible to balance the overflow from the main tank...<
to skimmer and overflow to Partition two (skimmer). Hopefully being agitated by water flow will help prevent debris trapping and will nitrify my ammonia/nitrite for me without becoming too much of a debris trap.
<Shouldn't be an issue>
Partition/Box three:
Refugium with Live Rock (a little) , Ulva as Macro algae (readily available to me from sea)
<Mmm... Ulvales are not the easiest macros to culture...>
<<Hmm... this is true... have tried before with Ulva in display tank which gradually diminished to nothing, but had the feeling someone was munching on it ,(maybe Pseudochromis bicolor?),
>Not likely to its exclusion<
will see if Chaetomorpha (prolifera?) is available, but doubt it.>>
>Ask around... other national hobbyists...<
..2000 LPH Water  pump (will probably enclose) returning to Spray bar.
<Mmm, do look into Loc-line... other distribution here>
<<What's wrong with the Spray bar?, not enough movement?>>
>That... from restriction and the loss of ability to direct, re-direct flow direction<
should I tee this back to the refugium now , or just wait and see what the flow is like?
Do you think I would be pushing it to try for a DSB in this tiny and short refugium?
<I'd arrange bypass of some of the flow here... with adjustable weirs perhaps>
<<Don't think I have enough space  to employ adjustable weirs (only about 30cm X 30cm),  maybe the tee from return going back to refugium , with just pump in a weir?>>
>A good idea, yes<
Only have 2mm Coral sand at the moment and feel I would probably have to go about 4-5  inches plus to make it anaerobic, don't think it will fit??
<<would the inches here be right?>>
>Yes<
How deep does miracle mud etc need to be?
<An inch or more... you might be able to collect your own...>
<<Don't think I'm brave enough, any clues on how to tell what sort?, have ordered some CaribSea Aragamax online in any case, managed to find some.... Whew, not cheap!, do you think 3 inches of sugar-fine will do, or am I being stingy to my detriment !>>
>Should be fine<
<You have many good ideas here... But I would add another intake drain of about the stated 1 1/2" size, and do away with the valve illustrated... not necessary>
<<Valve/Tap is mainly just so I can turn off flow to work/clean in sump>>
>Do please check, make sure that in the event of a power or pump failure the water will not overwhelm the sump<
In the same vein of questioning, have seen Anthony and others comment that submerged bioballs are a bad idea, but I can't work out why? ,
<Inherent design... much more useful in oxygen rich environments... not sat. (7,8 ppm.) vs. 210,000 ppm...>
<< Do you mean that 7-8ppm would be submerged...vs. Wet/Dry at 210,000ppm?
>Yes<
I realize this is better for Nitrification, just wanted to know if you can use them in more anaerobic conditions for Denitrification?>>
>No, cannot be used for such<
seems to me that if you had a coarse prefilter, flowing to some wet/dry bioballs followed closely by some submerged bioballs in an area of low O2,(ie Debris filter->Nitrification->Denitrification) this should be good, .. no?
<Mmm, no... presence, even hypoxia negates anaerobic microbe metabolism, presence>
<<Whoa!.. sorry, lost you here ,....presence of what?,
>Of any measurable dissolved oxygen<
are you saying that Anaerobes don't likely completely hypoxic conditions?>>
Is it because the balls are just not porous enough to foster anaerobic conditions?
>Correct<
<This and a lack of surface area per volume>
.....<Canisters... not really useful for denitrification... too much flow,
too little media volume... though use of sintered glass, ceramic media...>
<< Does this mean if I use something like Aqua-one CeramiSub (looks a bit like ceramic live rock rubble) that I just bought, I might foster some small anaerobic pockets in this canister of mine, otherwise I may have to try for a hang-on 'fuge, not likely to get past management though (yes ... married)>>
>I would use such material... though, you are correct that it is of little use in such a setting (canister)<
Do you know of any other way I could filter a system that can't be drilled besides a canister? (Oops , there I go.. said I wasn't going to discuss the 600 litre now.... sorry ). I can leave the canister doing just mechanical and chemical and circulation , but I really think this is a waste, although I will have a Weipro 2014 Hang on skimmer and Live rock as well.
<Do look into having this tank drilled... yes, though tempered, can be done... the larger LFS, glass shops...>
<< Can't seem to find anyone prepared to do it  ( even had to drill my own hole on the experimental tank ... 1 hour with a Dremel and a diamond engraving bit/water.... whew!!),
>Nerves... and patience for sure<
and I understand that if I do find someone to do it, they won't take responsibility. Blew the budget with this tank , if they break it it's over., can't afford to replace.... : - (
Actually,  I originally spent over a week designing (copying.. ) and building a beautiful hang on overflow siphon box, only to throw it in the bin after reading more negative opinions on WetWeb and thinking long and
hard about the anxiety factor at 4 am, ah well..>>
Which book do you think I would benefit more from with respect to reef keeping?
<Modern Coral Reef Aquarium series by Fossa and Nilsen>
<< Are you just being modest here, I was referring to CMA vs. Reef Inverts., was hoping to buy one of these to support your hard work. If you truly think the Fossa book will be better for me I will get it, but would still like a copy of Reef Inverts.>>
Thanks again
Rama
>Ahh... Your writing presents itself as you being a bit beyond CMA, yet, yes to the RI book... I do believe you would gain by its perusal... enjoyably even! Cheers, BobF>

Marine Tank Set-Up Mucho Research needed. Reef filtr.   2/4/07
WWM Crew,
<Hi.>
I am making the switch from Fresh to salt water aquariums.
<Cool....>
I have a  75 gallon tank, and since my freshwater tank was really overstocked I have a lot  of filtration.
<Ok.>
I have an Eheim Classic, and two Penguin 7000s hang on filters. I  was wondering besides a protein skimmer if there was any other filtration I  would need.
<Well I don't think that you have is appropriate for a reef tank, personally I prefer to utilize live rock as a means of bio-filtration....look into a skimmer + macro algae refugium combo.>
I want it to be a reef tank, and I will be stocking it with tangs and maybe a butterfly fish or two.
<Mmm...you may want to research this stocking list...thoroughly before materializing this tank so to speak..."hint + hint.">
What will be the best protein skimmer  to use for my 75 gallon tank?
<What type of set-up are you using (sump/hang on...) how much you willing to spend? AdamJ.>

Marine Tank Upgrades, filtration options   2/1/07
Hi guys,
<Hi Matt.>
Thanks again for the job you do.
<Thank-you for the compliment.>
I have a 55 gal setup with around 55 lbs of live rock, 2 MaxiJet 1200's, emperor 400, and a Coralife SuperSkimmer.  
Livestock includes a flame angel, 5 chromis, very large coral banded shrimp, 5 peppermint shrimp, and lots of snails and hermits.  The tank mostly stays clean and clear and the coralline growth has really taken over (tank is 8-9 months old).  However,  I know the emperor isn't really appropriate; especially if I want to switch to a reef tank.  
<No, not my first choice.>
Also, the SuperSkimmer doesn't seem particularly effective.
<It's "ok"...again not my first choice, though a lot of people like it...for the price.>
  It pulls out some gunk, but I could probably go for a month without emptying it.
<That's no good....is it tuned properly?>
  I'm trying to upgrade the filtration on a budget.
<I understand.>
A dedicated sump is not practical right now.
<ok.>
I'm considering either a skimmer upgrade (possibly a remora or remora pro)
<Good brand of skimmer.>
or removing the emperor and adding a hang on refugium.
<Awesome.>
  Eventually, I'd like to do both.
<Even better.>
In your opinion, would a better skimmer make a big difference?
<I would rather the remora than the Coralife if we are being honest...though I think the refugium replacing the emperor will make the largest difference.>  
Also, would I be making a mistake by taking away the mechanical and carbon filtration that the emperor provides?
<I don't think so...no...keep it on hand (in a closet) if you need a means of running carbon or something like that, down the road.>
Things are OK now, but I want water conditions to stay as pristine as possible.
<Sounds good.>
      On a separate tangent, my current fish are healthy and happy.  
However, I have had bad luck trying to add gobies and blennies.  They seem to disappear when I'm gone for a few days and the coral banded shrimp ends up molting within the week.  Could he be capable of devouring a smaller goby or blenny in just a few days with no signs of the carcass?  
<In a tank of this size....easily...food does not go to waste in the ocean.>
Thanks, in
advance.
<Welcome.>
Matt
<Adam_J.>

Two Questions... re... reef set-up... can. filtr., top-off water prep. 
   1/27/07
Hello,
<Hey Joe, JustinN with you today.>
First and foremost I would like to thank you for all the resources you provide.
<Thank you for this.>
I bought and read Bob's book and am constantly looking through these pages while I slowly put together my 65g FOWLR.
<Ah, yes, is quite an excellent book... hard to put down!>
I have a couple of questions that are a little confusing to me and would like to have your point of view or answer:
<Alright, I'll give it a go>
1)    I will be using roughly 75 pounds of LR, a Remora Pro with Mag 3 skimmer (which I gather from many sources is excellent), and I also bought a canister filter (Eheim Classic 2215). The last point is where I am a little confused. My LFS tells me that I could either use a few blue coarse filter pads, with the white fine pad, and the carbon pad, or the second option would be to run it on empty just for the extra movement (Please note that I will be using a Maxi-Jet 1200 for extra movement as well). Based on your understanding and the setting that I have, would it make sense to run it on empty instead of using the media? If I use the media are there types I should not be putting? If I run it on empty, what potential problems could arise and should I be looking for?
<I don't think you'll see any detrimental effects from running this canister filter empty, but I don't think the biological media is really necessary. I would utilize this for chemical media, such as a bag of ChemiPure or activated carbon, whatever your choice here may be. When the chemical filtrant is not needed, you could run the canister empty with no deleterious effects.>
2)    I will follow the books advice and do weekly water changes and at the same time, prepare the water in a trash can to age in my garage for a week with a heater and a pump to use the following week. I am a little uncertain about how the freshwater top-offs should work. I think I understand that the best way is to use our judgment and replace the water as we see necessary (a couple of times a week), but how to do it is the question mark for me. Does top-off water need to be aged? If so, how long and how (airstone, small powerhead...)? If you could just briefly explain how I could prepare the top-off water or point me to the right link I would greatly appreciate it.
<You've pretty much got it, dead on already. The freshwater should be aerated beforehand, to help drive out excess CO2 levels and stabilize the water's pH readings. As you suspect, the top off is simply to refill the excess that has evaporated; that is, wherever your running level of water was to begin with, will be where you refill to. This is to help keep the salinity stable, without fluctuations. Either an airstone or powerhead will be more than sufficient here.>
I'm a very enthusiastic newbie and want to make sure that I get it right, so forgive me if these seem like "easy" or "obvious" questions.
<Not at all, my friend. They are refinements of specific situations, which shows signs of you reading and investigating answers on your own. The 'easy' questions that that could be considered troublesome, for lack of a better term, are those that come to us with absolutely no research behind them, and furthermore, that respond back to us asking the same question again, without really reading our responses.>
Thank you very much and please keep up the good work!!
Joe
<Thank you for the kind words, Joe. Hope I've helped you here! -JustinN>

Marine filtration question   3/22/07
Thank you for the response JustinN.  
<No problem, Theron, sorry for the delay on this one! *grin*>
San Antonio huh?  I have to say lucky you.  San Antonio is a wonderful place, with wonderful people.  
<It's got its moments, but personally, I'm from the coastal bend -- Corpus Christi to be exact -- and I never feel right away from the coast, even after 16 years of living in San Antonio..>
We will be at Sea World for spring break in a couple of weeks.  
<This was just recently, hope you had fun!>
Thank you for the suggestions.  I have no live rock in this system.  Just a nice structure of the "holey" rock The one with the holes, hasn't been blessed as far as I know) so my fish can sleep and swim around in there.  They seem to love it.
Would just the bio wheel be enough anyway?  
<Should be sufficient, though I always like to have some live rock in a system for its aesthetics as well as natural filtration. Not necessary, but certainly helps.>
I am feeling pretty good about the progress of this system, even though it has been running for over six years now, I do think it is a healthy system.  
<I would think you are correct here.>
I have had this cell pore cartridge since start-up so I have really been reluctant to stop using it.
<Ok>
I brush it off in my bucket of siphoned off saltwater during water changes from time to time, but it does get caked up a little by nature.  Could this in and of itself be one of my Cyano concerns?  Just trying to get a handle on this stuff once and for all.
<Probably not the source, per se, but a contributing factor. You should try to clean this as you state, more thoroughly and more often. The waste accumulation can lead to excess nitrates in your system, which in turn could be helping fuel the Cyano.>
Thanks again, and might see ya around your hometown.
<Anytime, my friend.. Hope you had fun here! -JustinN>
TW
Just up I-10

Filtration Methods, reef     1/14/07
Hey guys currently I have a 30 gallon reef aquarium which I admit is overstocked, and I am in the process of making home for a couple of my fish. <fishes>  and my Nitrates are extremely high about 160ppm, then after a 25% water change dropped to about 80ppm.  
<Still unacceptably high.. More water changes, please! *grin*>
I have started feeding them less, as I was over feeding them no doubt.  However this question mostly refers to filtration.  
<Ok>
I have currently a Penguin (bio wheel removed) so carbon filter only, and a CPR wet dry with poly pad, and ROWAphos.  
<How often are you thoroughly rinsing (in throwaway tank water after a water change!) the Poly Pad? You should make this a regular part of maintenance if it is not, it will help with your nitrate issue.>
I plan on getting super activated carbon and throwing it in my wet-dry, along with Purigen, would I still need to keep on the mechanical filter or what would you recommend I do?  
<? ...I'm not completely clear what you're asking here.. Are you asking that after adding carbon and Purigen to your wet/dry, if you can remove your hang-on-back filter? If so, you certainly could.>
I also have a CPR protein skimmer.  Every filtration device on the tank is rated to 55gal or 60gal max, so I am getting a lot of filtration right now, I am just not sure if it is hurting me.  
<? Why would it be hurting you? The only possible problem I see is the utilization of the wet/dry in a reef setting. This is typically not done, for the reason of the possibility of higher nitrate accumulation. One option here could be to remove the wet/dry portion in your sump and replace with submersed live rock rubble, which will likewise act as a biological filter.>
Also, my protein skimmer, after I clean it will up to 2 cups overnight, but after that I keep the collection cup clean and it just fills maybe a 1/4" per day... any ideas?
<Perhaps just needs to be fine tuned.>
Thanks for all of your help,
Jason
<Hope my responses serve you well! -JustinN>

Re: Filtration Methods, reef     1/14/07
Hello Again,
So if I understand correctly, I should remove the "BioBale" currently in my wet/dry and replace it with live rock particulate?... Also, would I then need a light over my wet/dry?  Also, do you know of anyone that might happen to sell live rock particulate that is large enough not to slip through egg crate? or is my LFS a best option?
Thanks Again,
Jason
<Mmm, not particulate, then you'd just have a crushed coral-like substrate. Live rock rubble is the term usually used to describe a collection of smaller broken bits of live rock, often found at the bottom of shipping boxes from overseas shippers. A LFS would likely be your best bet, unless you have enough live rock that you can spare to break some up into smaller pieces with a chisel and hammer. The idea here is to keep the live rock submersed, and the biota on and in the rock will act as your nitrifying filtration. Cheers! -JustinN>

Re: Filtration Methods, reef     1/14/07
Hello Again,
So if I understand correctly, I should remove the "BioBale" currently in my wet/dry and replace it with live rock particulate?... Also, would I then need a light over my wet/dry?  Also, do you know of anyone that might happen to sell live rock particulate that is large enough not to slip through egg crate? or is my LFS a best option?
Thanks Again,
Jason
<Sorry for the second follow-up here, Jason, but I realized that I missed your question about lighting. No, lighting is not necessary for live rock rubble alone. Lighting over your sump would only become necessary if you were to add macroalgae into the mix. Cheers! -JustinN>

Re: Filtration Methods, reef     1/14/07
Hello again,
Would this be a suitable wet/dry to refugium conversion for my 30 gal reef tank?,  Only problem is the entire refugium area would only be aprox. 1.4 gallons, as my wet dry is only 8" wide.  
<It would not necessarily be a refugium conversion, if all you add is the live rock rubble. The submersed live rock alone will work as your nitrifying biological filtration, and likely be more effective than the wet/dry was at this job. Running volume is not as much a concern here.>
I also have a 10 gal aquarium that I could convert, do you know of anywhere I could get a dimensioned sketch of such thing?
<This may be a better solution, as it will provide more water stability to the system. Baffling information is posted, available here on WWM, see here: http://www.wetwebmedia.com/ca/volume_3/cav3i1/Baffles/baffles.htm and http://www.wetwebmedia.com/refugium.htm for more information on refugium utilization and baffling.>
Thanks,
Jason
PS: I currently have a hang on back CPR skimmer, so I don't plan on relocating it.
<No problems here, Jason. Most people only move such things for preference to see less equipment and more nature. All in personal preference! -JustinN>

Reef Mech. Filtration   12/18/06
Hello, I'm hoping you can guide me in the right direction here concerning mechanical filtration. My name is Chris and I have a 125g reef ready  aggressive FOWLR. the setup is about 120 lbs of live rock a 30 gallon sump/fuge with 100 micron filter socks, a Berlin turbo protein skimmer and two quiet one 3000 return pumps. My Problem is with tiny floating particulate matter (definitely not micro bubbles) ,I have two puffers and two triggers
<What species?... too much...>
that chew up the sand and rocks and spit them out, so the tank always looks cloudy. I was thinking of running a magnum canister filter or a Lifegard modular filter with the pleated cartridge to remove the suspended particles. which would be the best choice here?
<This, these would definitely help here>
or do you have any better suggestions?
<A bigger system...>
any advice you have for me here would be greatly appreciated. Thanks for you time and a great web site. Chris
<Please read here: http://www.wetwebmedia.com/marmechf.htm
and the linked files at top. Bob Fenner>

Mechanical Filtration for a Reef System? - 10/23/06
Hi Bob,
<<Eric with you today...Bob is off on another exciting adventure abroad>>
I have been looking for quite a while to upgrade my 55 gallon saltwater tank to a 125 reef ready tank.
<<Neat>>
I am looking at one now, All-Glass Aquarium 125 gallon reef ready, with a 29 gallon tank for a sump, with a bio-rocker, and an Angstrom UV.
<<Mmm, maintenance hassles aside, I don't personally see the "want" for UV filtration in a reef tank>>
He said he bought everything at a Local Fish Store, and they sold him everything that he needed, but shouldn't there be some kind of mechanical filter system with that setup.
<<Not necessarily...many hobbyists (me included) forgo any "real" mechanical filtration in reef systems for reasons of detritus buildup (can easily become problematic) and/or removal of desirable planktonic life>>
He said he didn't have any and never had any problems.  Does that sound right?
<<Sounds fine to me>>
If there should be what could I do with that in the sump.
<<If you want you can add a filter sock to the end of the drain line in the sump...just be sure to clean/exchange this a couple times a week to keep decomposing organic matter from causing problems with water quality>>
Thanks
<<Regards, EricR>>

Reef Bio Filtration...Keep the Bio-Balls? - 05/15/06
Thanks for all of your help thus far!
<<You're welcome>>
I have one more question.
<<Okay>>
I have a 72 gal reef tank with a new wet/dry filter setup on it.  Right now it has bio balls in it.  Do I keep them or remove them?
<<In a reef system with plentiful live rock the bio-balls are unnecessary, and maybe even to be avoided due to the fact they produce nitrate very quickly/efficiently but with out the capacity to take the process to the next level as the live rock is able to do...thus creating an excess of nitrate for the system to deal with.  Best to use live rock/live sand beds for biological filtration in a nitrate sensitive system like a reef tank...in my opinion>>
Will eliminating them cause a problem or should the live rock take over or should I keep it the way it is?
<<The live rock will take over.  If your system is lightly stocked you can take the bio-balls away at any time...otherwise, remove half now and half in a bout a week’s time>>
Along with it I am running a Sea Storm 100.
<<This is great for a FOWLR or FO system...but functions much like the bio-balls in a reef system>>
Do I remove this also?
<<Would be better to convert it to a carbon reactor or similar>>
I do have 5 medium fish in the tank.  What do you recommend?
<<As already stated>>
Thanks!
Chris
<<Quite welcome, EricR>>

Reef Filtration/Selection    4/9/06
G'Day from Australia  <And from the USA>
Your web site is exhausting and brilliant, thanks for so much info.  <You're welcome.> My question to you is; there is so much contradicting advise everywhere from shops to website's, and I'm a little confused on what type of filtration I want to use. I know there's all different ways to filter my tank but I just want the best way, should I go Berlin style or wet-dry with other means of filtration like canister for my fully blown reef set up.  And why do you say wet- dry are
good for fish only reef systems but not so good for reef systems. <Wet/dry sumps are great for reef systems minus the bio balls.  They offer excellent gas exchange and aeration.> I maybe am asking to much but I just want a so called turn key system that will work the best. One more thing, DSB should or should not be siphoned, very contradicting advise from every one. <Providing there is a healthy growth of micro inverts to keep the sand churned, vacuuming shouldn't be necessary.  Problem here is that if the population declines, you then have a nitrate factory and a hydrogen sulphide producer.  Very important to keep sand sifting inverts in systems like this and monitor population levels.  As far as filters, I favor the wet/dry sump (no bio balls), a good protein skimmer and a wave making system. Thank you for your time.  <You're welcome. James (Salty Dog)>
Regards, Sydney Australia

Reef Plumbing/Filtration - 04/09/06
Hello,
<<Howdy>>
I have just switched from a 55 gallon tank to a 90 gallon tank with a 30 gallon sump.
<<Cool!>>
I have four 1-inch bulkheads in my tank and a Mag-Drive 9.5 in my sump.  The guy where I purchased this tank from (Steve, from Elmer's Aquarium in Monroeville, PA) said this would circulate 1000 GPH.
<<Would be close, yes...assuming no backpressure for the pump to work against.  In reality your flow will be somewhat lessened, determined in large part by your plumbing configuration.>>
One of my questions is that I only have one bulkhead open because that is all the pump can handle.
<<Likely your plumbing/head height (all creates backpressure) are severely restricting output.>>
So this would be 250 gallons GPH, correct?
<<Mmm, not necessarily...but if the single 1" return is handling the flow without excessive noise, surge, etc., then you are likely pumping 350 gph or less.>>
Is that enough circulation that I can just leave it alone?
<<Through the sump?...yes...for the tank as a whole?...no.  Do supplement flow in the tank with other methods...perhaps a closed-loop utilizing one or more of the other bulkheads.>>
Only thing I noticed wrong was one of my elbows coming out of the sump is dripping once about every 1 to 2 minutes.  And it is dripping back into the sump tank so I am not really worried about it.
<<Ah, okay.>>
The micro bubbles are very minimal.  What am I doing wrong?
<<I don't know that you are (doing anything wrong)...I would need more information about your plumbing configuration to say.>>
My next question is do I need to run a canister filter for this setup?
<<Likely the canister filter isn't 'necessary,' but one could be beneficial for using chemical media (carbon/Poly-Filter)...if 'maintained/serviced' properly.>>
I currently have about 50 lbs. of live rock, some corals, 2 yellow tailed damsels, 1 yellow tang, 1 goby, 2 clown fish, 1 royal Gramma, 1 flame angel, 1 coral beauty, 1 cleaner shrimp along with a cleanup crew.  I have read on this site that canister filters are often misused with tanks running a sump.
<<And also those without...is a maintenance (or neglect of) issue.>>
Would a canister filter help me or hurt me?
<<If you clean/rinse all on a weekly/bi-weekly basis, and change out media as it becomes exhausted, then it will help you.  Regards, EricR>>

Reef Plumbing/Filtration II - 04/10/06
Hello again,
<<Hello>>
Thanks for the speedy reply.
<<You're welcome>>
I still have a few questions about your answers.
<<Ok>>
You talk about back pressure.  It is about 4 feet from my pump to the top of my tank.
<<According to the manufacturer that alone would reduce the output to about 800 gph.  Then you have to consider elbows, tees, friction from the pipe itself, etc., etc..>>
My plumbing comes out of the pump to the top of the sump tank and goes diagonally to the middle of my stand where it then T's off and one goes up one side of the tank and the other side of the T goes up the other side of the tank.  So I have 2 3/4-inch pipes going into my tank from the T.
<<And all adds to head pressure (back pressure to the pump).>>
And I am using 1" flex-pipe coming out of my bulkheads.  You also talk about noise.  What kind of noise?
<<Plumbing/water noise...the kind of noise you get from trying to drain too much water through too small of  a throughput (your drains).  This typically will manifest itself as excessive gurgling/surging noises (some folks describe it as akin to a toilet flushing) and excessive turbulence/bubbles in your sump.>>
The pump seems to be running fine.
<<And it probably is.>>
Only noise I hear is when I shut the pump off the pipes rattle for about 10 seconds and stop.
<<!?>>
I also have a check-valve and shutoff-valve coming out of the pump.
<<Aha!  The check-valve is your problem.  Is best to not use these as they will restrict flow greatly on most non pressure-rated pumps...and the valve will likely fail on you at some point as well.  You should remove the check-valve and position all inlets/outlets such that your sump will hold the transient water volume in the event of a power outage.>>
So my last question would be do I need a bigger pump and if so how big do I need to handle this?
<<If you truly want 1000 gph then yes, you need a bigger pump (how big depends on whether or not you remove the valve).  But if you heed my advice to remove the check-valve, do that first and then see how your existing pump performs.  Regards, EricR>>

Reef Plumbing/Filtration III - 04/10/06
Once more, Hello!
<<Back at ya!>>
I feel like an idiot asking all these questions but in regards to your latest remarks about the gargling.
<<No worries mate...am happy to elucidate>>
Yes, I do get that when the water level gets low, is there a way to stop that?
<<Low where?...the sump?  Perhaps you need to extend your drain pipes, or add 45 or 90 degree ells.  Do have a look here for more info on noise abatement:  http://www.wetwebmedia.com/pbnoisefaqs.htm >>
Next, how many gallons an hour through the sump is suitable for a 90 gallon aquarium?
<<It's not so much a matter of what's a suitable flow rate for the tank, but more what's a suitable flow rate for the plumbing/throughputs, as well as consideration for the size of the sump, and maybe most important of all...the location of the sump (in other words, do you want to be able to talk/hear the television over the sounds of the aquarium?).  I don't think you've mentioned the size of your sump in our previous exchanges, but with four 1" bulkheads for drains you should be able to easily handle the output from the Mag9.5 (sans check-valve) without undue noise/difficulty.  Open up all the drains and see what happens/how things perform.  If you don't wish to use them all, plug one at a time until you reach that point where the water starts to overcome the drains.>>
Hopefully this will be the last time I bother you and again, you have been a great help with your answers.
<<Not a bother my friend.  We have a plethora of information about this subject (and so many others!) on our site...do some keyword searches re and you'll likely find what you seek and more.  But if you don't, please feel free to ask a question.  Regards, EricR>>

Reef Stocking/Filtration - 04/08/06
Hello,
<<Howdy>>
I have a few questions and would appreciate any suggestions you can offer.
<<Alrighty>>
I currently have a 55 gal. reef tank that has been up and running for over 6 months now.  I have only 2 fish, a yellow tail damsel and a firefish with plans for more peaceful fish in the future.  I have a 1-inch aragonite bed, 80lbs. of LR, 1 Crocea clam, 1 feather duster, a colt coral, mushrooms, brown colonial polyps, green star polyps, and a pipe organ coral colony, plus a number of snails and hermits. I bought all of the corals as frags and all are growing and appear to be extremely healthy.
<<Ok>>
I know that you aren’t supposed to mix hard and soft corals but I have them all spread far apart (at least 12” each).
<<Very good...but do employ some carbon/Poly-Filter to help with the chemical aggression.>>
My first question would be, what is your opinion of my mix. Do you think it is likely that everyone will be able to live happily in this set up?
<<With proper husbandry/setup/attention to water changes you will likely be fine.>>
If not, what would you recommend changing or taking out?
<<The clam is probably most at risk here...but with adequate lighting/placement, good chemical filtration, and frequent water changes you can make this mix work.>>
For filtration I have LR, a protein skimmer, 3 powerheads, and an emperor 400 hang on power filter which I clean and change carbon on once every week or two (I don’t know if this filter is a good idea or not for a reef tank, I’ve gotten mixed reactions).
<<The filter will serve fine with your maintenance schedule...though a small canister filter (cleaned just as often) would be more efficient/effective.>>
I also do biweekly water changes of about 10% and all of my levels seem to be well within the parameters. After a lot of research, I still have questions on filtration. Is my tank poorly set up in this dept.?
<<Poorly?...no>>
I have been thinking of setting up a refugium but am still a little hesitant.
<<Don't be...can be of great benefit.>>
Do you think that it is absolutely necessary to have one of these or at least some sort of sump?
<<Not absolute...but again, very helpful.>>
What do you recommend?
<<If you have the capacity...both...else you can 'make do' without.>>
Finally, I was thinking about getting a frogspawn because I want to get a clown or two and I know that some will host this coral. Given my current set up is this a terrible idea?  If so do you know of any corals that would blend well with mine that a clown might also host?
<<The clowns don't need a "host," but you can try the frogspawn if you wish.>>
Thank you so much for any suggestions and advice you can offer.
Nick
<<Quite welcome Nick.  Regards, EricR>>

Reef Filtration, Options Galore - 03/17/2006
Great website!
<Thanks Jim. Glad you like it.>
I want to set up a new 65 gallon reef tank. My LFS suggests that all I need for filtration is an Aquafuge Pro with built-in CPR skimmer for filtration. In searching the internet I found a CPR Tech page FAQ that indicated that the Aquafuge PRO was not intended to be the sole filtration system only a supplement. \
<I agree. Better to have a good skimmer as well that can handle the tank volume. Look into the AquaC line.>
I am getting ready to make my purchases and want to do everything right the FIRST time.
<Well that just takes all the "adventure" out of it;)>
Is the Aquafuge set up the way to go?
<A good addition.>
Do I need more filtration and if so what?
<Many options for you but a dedicated skimmer, the fuge (with additional skimming), and a good bit of LR/LS is all you really need. Here's a good link to start on http://www.wetwebmedia.com/reeffilt.htm .>
Thanks in advance!
Jim McDonald
<You're welcome. - Josh>

Re: Reef Filtration, Options Galore - 03/17/2006
One follow up...if the refugium is large enough to support a 100 gallon tank would I still need the second skimmer?
<I would.>
I only ask because your response mentioned handling of tank volume.
<I like to keep things "function specific". I would plan on the fuge doing the fuge's job (added benefit of skimmer a bonus), and have a skimmer for the sole purpose of skimming. Likely much more efficient than a built in skimmer.>
Thanks again.
Jim McDonald
<Welcome. - Josh>

Reef Set-Up/Filtration   12/28/05
Happy holidays!
<Same to you Ed.>
OK, so the wife and I went into the LFS and were astounded by the coral.
<Amazing isn’t it?>
We thought about a nanocube and did some research and decided that  it was not the way to go.  
<Yes they are nice “novelty” items but I find it hard to take them seriously when they recommend it for marine use without installing a protein skimmer. It is definitely not for beginners.>
There are only 3 LFS stores in the city selling  salt water/marine.  In two the tanks are filthy and in the third we get  different advice depending on who we ask.
<Differing advice in the marine aquarium, no couldn’t be….Seriously though this is why WWM and other information exists so you can research for yourself and come to your own logical conclusion.>
We have now spent several hundred dollars on reference books and maybe its too much information but we're confused.
<Can never have too much.>
We are looking at a 55 g Tenecor marine ready or a 70 g Oceanic reef ready Tech.
<Both are good sizes and reputable companies.>
We would like to keep the tank to 36 inches. We plan to use about  100 lb. of LR and do a 3 inch live sand bed.  We plan to do the closed  loop manifold system you recommend.
<Good.>
We'd like to add a sump to hide the heaters, chiller (we are planning MH), and skimmer and to increase the amount of water.  
<Very good.>
Both Tenecor and Oceanic have recommended sumps including wet/dry filtration.
We have been reading forums  in which writers stated that with LR/LS filtration additional filtration may  
actually be detrimental. What is your opinion?
<Bio-media after a period of time tend to accumulate nutrients and it’s just not as efficient as a breeding grounds for nitrifying bacteria, in either words except in certain applications…they are becoming less favorable.  The surface area on live rock is more than ample at providing a breeding grounds for nitrifying bacteria and the bio-media is not necessary.  Bio-media is great at breaking down ammonia and nitrite but not so great with nitrite. Also macro-algae/microfauna refugiums are of much more benefit to the reef tank. I would look into these.>
One of the manufacturers recommends an in sump pump.  It is my  understanding
that we would be better off if the pump were outside the sump.  What is your opinion?
<I prefer “dry” pumps as opposed to wet pumps, they tend not to transfer as much heat to the water and give you more room in your sump for the equipment and refugia mentioned above.>
Thanks,
Ed
<Quite welcome, Adam J.>

Major Remodeling (Tank Reconfiguration)  11/16/05
Hey guys great site!
<Thanks for the kind words! Scott F. here today!>
I know you are busy so I will get right to it. I have been running an undergravel system (powered by two power heads) in my 75 g marine tank for years. I also run two (for lack of knowing what to call them) "hang on" filters on the back of the tank that cycle the water through carbon filtration. All has been well until I began to finally get into corals.
<Ahh...the coral bug has bitten...>
I currently have a colony of Xenia, a Pink Bubble Coral, Frogspawn, a couple of Ricordea, and some Green Star Polyps. I also have live rock in my tank as well as some Clownfish, Tangs, a Koran Angel, Large Green Chromis, Cleaner Shrimp, Hermits, and snails etc. . 
My question is this: can I phase out the undergravel system and update to a more "reef friendly" set up. I hate the crushed coral bottom and would love to go to live sand as well as do whatever necessary to give my corals the ideal conditions to grow and spread. Is it possible?
<Well, I would be inclined not to remove the UG filter plate after you stop using it, unless you do plan on removing the substrate as well (Sounds like you do want to switch substrate, however). I am in favor of setups utilizing sumps for water processing. If it were me, I'd view this as a complete "re-start" of the system, if your intent is to switch over substrate and filtration methodology. The tank will have to go through a new cycling process, just as if it were brand new (which it essentially will be!). BTW, the Koran will get pretty large, and cannot be considered a "coral safe" fish for an indefinite period of time.>
What do I replace it with? How fast should I make the transition?
<Sump-based systems are the way to go, IMO. You'd be wise to set up temporary quarters for your animals as you "remodel" the system. Proceed slowly, and study these types of systems before you make the move. Don't skimp on the equipment, particularly lighting and protein skimming. These items will make a huge difference for you down the line. Good luck! Regards, Scott F.>

It's All On The Site - 11/11/2005
I'm sorry if I'm repeating a question,
<Many, actually.>
but I've looked on the site and I'm still a little confused. 
<Much that you find confusing now can be alleviated with time, patience, and research. No worries.>
I'm new at the whole saltwater reef tank thing. I have a freshwater 90 gallon right now that I want to convert to a reef tank soon. But I'm not sure what kind of filtration to use.... 
<Much, much to learn, here....>
I've heard refugium is the best way to go but.... I'm not really sure how that works... do I need a wet dry to run a refugium?? 
<No, not necessarily.... start reading.>
<<Not at all.  Do what the nice lady says, please.  MH>>
Also.. I know I'll need a protein skimmer but.... what exactly does a protein skimmer do? What is it? 
<Removes dissolved organics from the water; again, read.... http://www.wetwebmedia.com/marsetupindex2.htm . Much on skimmers here, also on other filtration methods including refugiums.>
<<Foam fractionation is actually a rather old form of "chemical" filtration, and has many, many uses, including in some food production and refinement of certain products.  Google "foam fractionation".  MH>>
Also, if I go with the refugium setup, what all do I need to buy to get it up and running?
<Too many possibilities, too much information to impart in a mere email. Start with that link, and get crackin'.... you'll need to form your own opinions on these very subjective questions.>
Thank you for your time. -Kurt
<Wishing you well, -Sabrina>

Are Refugiums and Sumps Mandatory? 11/3/05
Greetings,
<Hi Brad!>
Brad B. here. I've been reading a lot on your web site to try an educate myself, answer questions and get ideas. I'm trying to be a good steward and have a basic question. First, here's my scoop: 46 g bow front marine aquarium / 60 lbs of live reef sand / mix of rock and live rock - a good coverage of LR but not all that much weight as I chose specimens with good color and surface area but light (save $$) / two Emperor 280s (fiber media plus activated carbon cartridges) / AquaC Remora skimmer with MaxiJet 1200 / two AquaClear 50s and two AquaClear 30s for circulation / Coralife 36" with a 96W Actinic, 96W 10,000K white, and two lunar LEDs on a timer - Actinic = 12 hrs and White 10,000K 8 hrs... okay... 
Can I expect good success (such as getting/keeping nitrates near zero) with a low fish load - inverts - corals given the above stated setup without adding a sump or refugium?
<Brad of course it is possible to get away without a refugium or a sump. Though I will say a refugium is in my opinion a great as