Hi everyone. I have 3 small zoa frags. Two of them have recently have been showing irritation to something. One colony has closed up completely and will not open. The other has been opening sporadically from day to day. I suspected possible zoa pox, so about a week ago I removed them from the tank, "scraped" them using the edge of sharp tweezers under a magnifying glass, and then dipped them in coral RX. This seemed to help marginally for a day or two. I have another frag, less than 6 inches from the two afflicted frags, that seems completely unaffected. I snagged this photo just now, unfortunately under heavy blues as the lights are about to go out. Hopefully someone can look at this and shed some light for me. I will try to get a photo in daylight tomorrow. Thanks in advance for any help.