MY FISH ARE ACTING LIKE THEY ARE HAVEING SEZIURES.I HAVE A MAROON CLOWN, NASO TANG, KORAN ANGEL,SPOTTED PUFFER,ROYAL TANG. MY TANK SIZE IS 125 . PH 8.4 NITRIT 0.1 NITRAT 0.0. MY CLOWN EYES ARE TURNING WHITE.PLEASE TELL ME WHAT IS GOING ON.