best way to treat ich

[naesco]

I have seen a very mild ich settle itself but have never seen a bad infest ion result in anything but the death of the fish.
In the QT treat with formalin or greenex. In both cases follow the directions closely and put the bubbler in the QT. Time is of the essence.
The problem with copper is that it is very difficult to test. Too little does nothing and too much can kill.
If you can't get at your fish, buy some garlic extract or garlic extreme. Soak dry foods or nori in the garlic and feed. The idea is to get as much garlic extract in the fish as possible and feed very often.
In addition buy a couple of cleaner shrimp (not cleaner wrasse) and they will help if you do not use the QT.
Good Luck
Wayne