Any ideas what this is. I'm a little upset with myself. I added a buble tip with out QT and this was the reminder I got. It is really just effecting a few fish and they are skittish and eating less, they also will not leave my cleaner shrimp alone and are hanging out at the water return. I am guessing their gills are also being effected because they are trying to get more oxygen at the return. Usually the fish are always against the glass when I am around but now they are hidding from me so getting a picture was tough. The eyes are also getting milky and swollen. Do you think I could hypo the intire tank? With 400+ lbs of rock and over 500 gallons of water I don't think I can catch everyone without draining the tank and removing all the rock.