Yeah, I moved them down in the tank. We'll see if it helps. Most of the rest of my zoas are doing great. I have two others that are semi closed up as well. Didn't see any nuisance critters, so I think I'm ok there.
I let my tank water changes slip from weekly to about 10 days near Xmas, and I'm back ontop of it now. Wonder if they liked the dirtier water?