hondo
Member
Do any of you regularly clean out the detrious that builds up on the bottom of your sump. Was looking at the bottom of mine recently and noticed a pretty thick build up ( 1/16" - 1/8") across the bottom of the sump (10g glass tank) and wondered if that is adding nitrates to the water. I was pretty much as close to 0 on nitrates for over a year as my test kit could be and recently starting getting some nitrate readings on my sailafert test. Nothing high but they are there none the less with nothing changed in the tank.
