If you can set up a QT, that is a good way to go. If that is not possible, then you will have to look into treating your tank. I used greenex a couple weeks ago after it was highly recomended by the LFS. After the 3rd treatment my crab died. It didn't really look healthy before I started so I can't sware that's what did it. My amemones are fine. The ich has not come back yet, but I will feel better in a couple weeks if it still doesn't come back. If it does come back, I will have to QT. Not looking forward to that as I have 6 fish and only a 15 gallon tank. I might have to put LR and anemones in the QT and treat the main tank. Hope it doesn't come to that.
Rob