@melypr1985 Well, it is a very sad day. I lost one of the fire fish. I knew he didn't look good. The other fire fish, sailfin and fox are looking ok. Going to test the water again here in a little bit. Fox ate Nori this morning, pellets this afternoon, and i will feed shrimp tonight (less because I think only the sailfin is eating it). So sad. The fire fish never got ick. I should have put them in the main tank before treatment, I should have increased copper levels slowly - things I didn't know. So much of this hobby is trial and error and no matter how much research I do and people I talk to, is seems as if I have to learn things the hard way. Feeling sad, but determined to have my beautiful relaxing tank.