White specs on zoas

[LiLinka]

I’ve had this Rasta colony for about 2 months. The polyps during the day seem to be half opening or not opening all the way as if something is irritating them. The lights went out last night and I noticed all of these dots on the stems of the zoas. I am aware of the sponge on the colony and am currently dealing with it. I am more worried about the dots present. Here are some pictures below. Any help is appreciated. Thanks!

Parameters:
Nitrate: 3.4
Phosphate: 0.04
Calcium: 450
Alkalinity: 9.6
Magnesium: 1440

 

[JaaxReef]

It looks like it could be Zoa pox. I’ve had luck popping them with very precise tweezers and then doing an iodine dip. Might need to repeat a few times but eventually my colony recovered. Not sure as to the cause but they can definitely keep zoas from opening and irritate them.

 

[thatmanMIKEson]

Rasta!