Cyano on coral?

[seadewrose]

So after a cyano outbreak a couple months ago, I cannot get what looks like cyano off this coral. Does not blow off. The coral looks unhappy because I just cleaned the tank. Usually open but it does appear to be bothered by it, I think... if anyone also has an ID that would be awesome. I thought they were zoas but I didn't think they grow out that long? Thanks!!

 

[noobreefer2]

Interesting, following