Hey guys, a colony of my prized Fire and Ice zoas are having some issues. It is a colony that has encrusted on a tonga branch and today as I examined them, a lot of the polyps are gone. It used to be beautifully and completely encrusted on the tonga branch.
Also, at the stem of body of the polyps that are closed, I see small white "salt-like" specs on them. What is going on? Please help.
Also, at the stem of body of the polyps that are closed, I see small white "salt-like" specs on them. What is going on? Please help.

