I bought a bicolor angel from a local petstore, not equipped for saltwater fish. I put him in qt, and he was fine. A few weeks later, he got an eye infection. No big deal, it went away a couple weeks ago. This week, both eyes are cloudy, and he has a lesion on his side, a small spot mussing scales. The fish is flashing, scratching, and letting its self go against a powerhead. What can I do? I have a spare 10g to medicate in if needed, I was thinking maybe cupramine?

. I will fw dip some of the healthy fish before they go to the dt, and in the future before qt.
jk

