You already had some success with your wife's wine carafe, go with that. I would, at this point, recommend an eight week fallow period, you don't want to have to do this again. Raise the temperature of the display to help speed up the life cycle as well.
Sea Turtle":394gmxm0 said:
I have noticed that a few of the other fish in the main tank have some ich on them. I think that the yellow tang is almost ready to go back into the main tank. My fear is that he will get the stuff right back on him again. Is this what is going ot happen? How do I get it out of my main tank? :x
Yes, that's what is going to happen. Once you have an animal displaying ich in the main tank you must assume that conditions are right for it to pop up on all others. If I recollect your main tank is full of corals and other inverts, thusly, the only way I know of is to fallow it for several weeks (no vertebrate life). That means quarantining all fishes in a bare tank until the display has been fallowed long enough to interrupt the life cycle.
Hyposalinity is used to some success, but I've been reading more and more of parasites that are becoming resistant to the shift in specific gravity.
You could also simply try doing a LOT of water changes on the display, and start feeding the fish fresh-frozen foods with garlic and see if you can boost their immune systems well enough that they can fight the parasite on their own. Whether or not you try this route is up to you, personally I'd fallow the tank.
Another treatment for those fishes that don't respond well to copper is Formalin. Steven Pro's written a good bit on it, as, if I recall, has Charles Delbeek (you could hit up Matt or Thales and see if they know or can speak with him).