Hello I have hippo tang with ich, he's in my quarantine tank / hospital tank, I've been treating with copper and still no positive out come. He's in there with a pinktail triggerfish and Dragon wrasse, other fish have no symptoms. Pinktail did a couple weeks ago but is cured. He's eating like a pig and not scratching at all.0 ammonia, copper .05, I'm using cupermine but ich has not fell off. My QT tank is a 30 gallon. Any advice would really help, because I really want to move the other two back to the display.