azfishgal
Active Member
OK, I've had these Zoos almost from the start of my tank and I started off with like 5 polyps so I'm excited how much they gave grown. However a few days ago I noticed some polyps closed up. I didn't really think much of it at first because I know they do that when eating or if something hit it. But they have not opened up and now it seems to be spreading. I can remove this rock with no problem if I need to dip it in something but any idea what it is or what I can do to stop it!!!