Zoa won’t open

[Bioree]

I have some Zoas that are not opening in the last few days. Noticed these white film on them. Does anyone know what that is. The zoa is attached to the rock. Should I take it out and give a coral dip?

 

[saltyfilmfolks]

Kinda looks like sponge. That should not be an issue.

What did you use to dip them?

 

[Bioree]

I haven’t dip it since it’s glued on the rock. There’s two type of zoa in that frag. It only effecting the fire & ice morph zoa and the eagle eyes seems fine.