I built a denitrator and was amazed at the results.
Until I noticed it was stopped up and wasn't doing anything at all... I'm not sure whether it had anything to do with my nitrate decline or not, currently it is not helping them stay at 5pppm.
I am afraid to unclog it for fear that it may release harmful things into the tank due to the decay of the anerobic bacteria.
The way my luck has been running, I probably have a batch of botullinum toxin stewing away in there, and I'd decide to clean the thing only to wipe out the southside of Savannah.:notsure: