Help ID : Zoa pox or some Filter Feeder?

Hi everyone

These zoas have been declining lately, i have seen these white swirley things on their stems for weeks now. but some of them are receding/ melting.. i've done a freshwater dip + iodine dip, any idea what's wrong? ;D






pictures are after freshwater dip today !

 

The white spirals on the stem of the zoas look like Spirorbid polychaetes . I have tons of those at the back of my wall. The zoa polyps that have melted/ receded have tons of these sticking to it, so.. are the ''Spirorbid polychaetes'' killing my zoas?

 

I have these all over the back of my tank, and a few on my zoas. The zoas seem to be doing fine though. So I'll keep an eye on this thread.

 

I'm not sure if the worms are causing the harm, i saw an asteria starfish all over it this morning, removed it, will see how it goes ;D

 

How are they doing now?

I have had Zoapox. I dipped my colony into a water / Revive mixture for 30 minutes for three days in a row, since then they have been doing great and the white pox have all disappeared. I have Furan-2 just in case as well but never needed it.

 

they are all open now, i think it was the starfish. most of the damaged polyps have lost their colors, it's darkish now. but recovering slowly ;D

 

What color was the asterina if you don't mind me asking?