[rsman]

A nice foamy works wonders as a learning tool, gets you outdoors, gets you flying, easy to learn, easy on the wallet and very forgiving you can litterally slam them into the ground and they bounce.

something to remember a denitrator is only designed to reduce or remove nitrate(based on its sizing), there are a lot of other nasties that come with dumping pounds of food into heavily populated tanks. the goal of a denitrator on a breeding setup should be to reduce the need for waterchanges due to nitrate, they are not a replacement for mechanical, chemical and aerobic bio filtration. they are for the most part uneffected by mechanical, chemical, aerobic bio filtration. and also have little effects on them.

now, IF you decide to build one or more of these consider using the output for non phyto cultures and larva, things where higher starting water quality is more important. and remember to degass before use these areas where O2 consumption is high require water higher in O2, the output of your denitrator will not be high in O2.