well said. i think water change is the best way.Daddyo72 said:Generally a bad idea. I assume your referring to a denitrator. The whole thing hinges on the rate of water flow. Too slow and it does nothing. Too fast and it creates Hydrogen Sulfides which can kill your fish and in large doses, humans. Try the sump and bio tower combo.
http://www.thekrib.com/Filters/Sasala/wet-dry.html
They are excellent for bio-filtration. Most retail pet stores use them for their sump system.Daddyo72 said:Ever tried a fluidized sand bed filter?