Zoa's Unhappy, Pox?

[neogenix]

I've just had my zoas slowly but surely close up on me for the last week or so. It started with a colony of green monster (FHI) and then progressed onto my watermellons and fire and ice... now two other colonies on the complete other side of the tank still on their FHI frags are starting to behave the same and staying closed. Strangely some of the polyps partially open on the monsters, and then some of the polyps open on the others.

The big changes so far was a water change (usual). I've tried feeding, moving, re-aiming the powerhead, but alas nothing is happening. After reading some threads today, I noticed that one of the colonies (the last to start misbehaving) has some white spots on it, and wanted to make sure that it's not zoa pox (see attachment, if someone could assist me in ID )

Otherwise the only livestock change in the tank has been the addition of a large-ish montipora (which I can't quite recall if it went in just before, or just after the zoas started misbehaving), which didn't seem to start off in the tank very well (it bleached a bit, and seemed to be doing the chemical warfare dance for a day or so...). Am I freaking out, or could something be wrong with my zoas?

There're some other zoa's in the tank that are perfectly happy... so.... ? Should I just freshwater dip them to be safe?

 

[neogenix]

No Love They seem to be opening a bit more today... although not completely open. The last thing I did before I went to sleep last night was to gently squirt some tank water over them with a baster to make sure that any debris was moved/removed.

 

[MikeandNicole]

It could be zoa pox, doing a furan II dip would not hurt them and is a cure for zoa pox. They could have also brought in nudis or another pest that is eating them so I would look closely for them. Doing a revive or coral RX dip again would not hurt your corals and could give you an answer. Dip them and then take a close look at them to see what is happening. Good luck.