Zoa threads

[JayA]

I have what I believe to be a purple people eater zoa. Today its polyps are not flat and more pointed with slightly protruding mouths and a single purple thread from the mouth (many but not all of the polyps look like this). I frequently find it upside down and need to right it. Any ideas as to what is going on? and what I should do? I have had it for a few weeks and its polyps have looked quite happy, until this am. No new fish, I do have an emerald crab, I did introduce a GSP and toadstool leather this week, but neither is near this guy and they look happy. I do have some mild cyano in the tank this week, maybe last week too, just a few spots on the sandbed.

 

[vetteguy53081]

May be due to stress due to bright light. Also check to assure there are no tubes around them with spinoid worms or vermetid worms