I have a Yellow Tang in a qt being treated with Cupramine. When I first got him he had ich so I started treating him. I stopped after 2 weeks and it came right back. So I started Cupramine again. He has been in the Cupramine for another 2 weeks now again. This week I started noticing he was disoriented and would swim into the side of the tank. Today he cant even swim without running into things. What is happening to him? He was eating yesterday too. Did a small water change and added carbon to get rid of the copper. I fear I am going to lose him need some advice ASAP!