About 4 weeks ago I purchased a really nice zoa frag from a reputable person, looked decent, although wasn't fully open due to being handled, bought it without carefully inspecting it. Brought it home and noticed it had Zoa Pox, while dipping it. Studied up on it and decided to try Furan 2. It worked great, and I now have a very nice frag in my tank.
Figured I would post a link about Furan 2 dipping as I hope it works as good for you as it did for me.
http://www.zoaid.com/articles004.php