A web search turns up several articles. Basically, the denitrator is a
bacterial filter that contains cultures of bacteria that eat oxygen. These
bacteria remove the oxygen from the NO3, producing free nitrogen as a
byproduct.

So very wrong, but so close. The denitrator sets up an anaerobic
environment (oxygen depleted) for the bacteria to thrive that break down
NO3-, it's called denitrification. These anaerobic bacteria contain enzymes
that break down NO3- into N2 and H2O.




See http://www.aquaworldaquarium.com/Den...tructions.html

George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.