well the pic. of the tank was actually very nice, mostly softies and LPS but still nice. but for 3k he can keep it. lol
as for the de-nitrator, I am still using it though. however the flow has slowed way way down. even with it turned all the up, I can only get a slow drip comming from it. so not sure how effective it is anymore. however my nitrates have been staying at 5ppm and lower.
maybe one of these days I will take it offline and just see if my nitrates start to raise.
how are the commercial units? I really was ready to buy one at first but thought about tring the DIY one first.