I fragged some zoas and palys for a swap and my colonies closed up. They didn't like it. I was dosing some iodide and this may be the cause of irritation. However, they have reddish brown tips and closed polyps. Some are melting. 
The reddish covering is not cyano, maybe a fungus?
Any tips or techniques to prevent a loss would help. I will be doing successive water changes.

The reddish covering is not cyano, maybe a fungus?
Any tips or techniques to prevent a loss would help. I will be doing successive water changes.



