Originally Posted by sepulatian
Well the only way to get rid of ich is Hyposalinity treatment or copper. Copper is not safe for scaleless fish such as eels. If I were a mod I would move this to the disease and treatment thread for you, but unfortunately I am not. Please post this over there and we will walk you through it.
You could do Hypo but you might be able to do something easier. I would go to the aggressive forums and ask in there if eels can be carriers of ich, they will know. If so either:
A)Do hypo
B)Remove him to another tank for a month. If eels don't carry ich, just leave the tank empty of fish for a month. Ichs average life cycle is 3 weeks. So if the tank is empty of fish for a month, no more ich. Plus your system will still be maturing during the process. So with nothing to "feed" off of, the ich will naturally die off without going through the pain of hypo. Hypo will kill anything living on live rock and live sand. I've done hypo, it's a pain in the rear! Besides, hypo is normally used in a small "hospital tank" with only one fish. Basically if you wanted to do it in your big tank you'd have to remove all live rock and sand then empty "X" amount of gallons of water per day and readd a slightly less amount of salty water back in. Not only is it time consuming, but in a bigger tank it takes a lot of water and salt which eqauals $$$. If you do hypo, by a smaller tank for your eel. Put him in there and eel proof it. Do hypo in the little tank leaving the big tank empty with all LR and "critters" in there for a month, hypo takes that long anyways.
I hope my rambling helps a little bit, good luck.