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#1
10-09-2011, 02:38 AM
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What I was saying is....you can put GFO(phoshphate remover) in a bag, as well as carbon in a separate bag and put that into the canister. You will keep N03 and P04 down. The spray bar on the return creates a lot of flow in a small tank like that, so, you either put the return pipe - without the spray bar, into the sump - if you have one - or into the tank (again, no spay bar) just have it dumping into the tank. The flow won't be as hard, but you get the good exchange of water being treated by the GFO and GAC.
You need to change it out ever 2 or 3 weeks as previously mentioned. You don't need a lot of GFO or GAC, just enough to keep your levels at 0. Good luck 
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#2
10-09-2011, 01:37 PM
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That is what i use it for in my 35 gallon, I have left the spray bar on and just have it point a little below the surface for surface agitation of the water. Seems to work o.k. been running like that for over a year on my sumpless 35 gallon
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