Well its a 115 gal tank, with Wet dry, pro skimmer, Emperor 350 outside filter. Water conds is: 1021 sal 0 nitrites, 0 nitrates, 0 ammonia, PH 8.2 I add fish all the time. I'M A sCUBA dIVER. tHE lAST THING I added was a Maroon clown. He seems to still be doing well. I have a Flame angel also doing well and an Atlantic Surgean doing well. My Queen angle and myRock Beauty both died from this Disease. Now my French angle is also starting to get symtoms. His eye is clouding up and he is staying in the stream og the POWER HEAD all the time.