I am at the end of my rope with this poor fish. I bought him in November and he did great for 12 weeks in QT then the weekend I was going to move him to my display tank he started with fin erosion. So I went and picked up meds from Trop. (my lfs) and treated him. It stopped the erosion and his fins slowly came back. so I started qt again with him (a new start date for 12 more weeks of observation and now his head and lateral line are turning white. Large areas of white on his head and a line down his side. He still eats like a pig and swims non stop. I just feel so bad for him I dont know what to do. treat again? or give him away free to someone with more experiance then I have. I just dont want him to Die.......... Water quality is good I do a 25% waterchange once a week... half new water and half from my Main system to keep the bacteria levels high in the tank. So water quality is Identical to my main system that recieves 10% weekly water changes.