I just purchaced an achillies tang on saturday it has been at the fish store for about 4 weeks and watched it eat before I bought it. I got home today and it has a cloudy eye and some ich on its body. He has eaten great since he has been in the tank and just fed again and he ate really good was wondering if someone could help me on what I should do next. This is a reef tank and he is the only tang in the tank other fish are clown, yellow watchman goby, fiji foxface, black spotted hogfish.