Okay, I noticed my dogface puffer two days ago scratching on rocks. I observed last night to see him doing to weird action again. I called a friend of mine and asked him if Ichgone was safe to use, but he told me to ask around because the dogface puffer is soooo sensitive to treatments. I asked him about copper treatments and he said not in my tank because of my inverts. My hospital/quarantine tank is a 5 gallon tank. I think it would be torture to stick him in there but I will if I have to to make him all betters. Any ideas on treatments to help my dogface? Ive heard that if his immune system is high, the disease will not affect him but remain dormant until I add new fish. Is this true? I don't plan to add any new fish, some people on other forums thought me cruel for the fish I had in my tank. Please help if you can. I love my little dogface. The other three fish show no signs of ich, they are swimming fine, not rubbing or anything. ???