02-22-2007, 06:48 PM
Join Date: Apr 2006
iTrader Positive Rating: 100%
if there are no fish and you want to basically A-bomb this thing, I think you should really do the bleach thing, its a little drastic measure but it should kill pretty much anything in there that could be causing the odor
or you could pull the hardscape for a couple days, change the water and see what happens.