I took the advice on removing my bio-balls! I have approx 90-100lbs of live rock, 140lbs of live sand. I removed most of them but not all, Apparantly the biological filtration couldnt handle it. By the time I could see a difference in the fish, I was too late! I was able to save my Maroon clown, sailfin tang and bicolor angle along with some various inverts, oh yeah and a pistolshrimp/YWM gobie pair! I'm braking the tank down completely and starting fresh (not FW) I'm curing all the live rock in bins w/powerheads, cleaning tank up, buying a RO/DI unit, and gonna cycle tank properly. I want to build a killer refugium for this thing also! Oh the joys of reefing! Thats ok, the second time around is better, right?