I have a 100 gallon FOWLR alot of inverts though, 20 gallon sump use a wet dry filter and a 250 hot magnum I have 60 lbs of live rock maxijet 900 power head Ammonia Nitrites and phosphates all 0 nitrates 5 PH about 8.4 salinity 1.024 temp 76/77. I figured that he had some kind of bacterial...