So what is on my frags and how can I get it off? Backround info I have 2 Zoa frags in a QT tank with several other various frags. They have all been in for 74 days. The Zoas are the only frags with this on it and I have tried moving them around in the tank. They were opening and fine for a couple of months. All the other frags seem to be ok so far.
