Small white hairs growing on zoa polyps

[antman327]

These small white hairs have appeared on one of my zoa frags and I can’t seem to correctly identify what they are. Can someone tell me what these white hairs are? I was also wondering what type of dip i should use to remove these hairs?
Thanks!

 

[Stealthreefer]

https://www.reef2reef.com/threads/hydroids-on-zoas-identification-and-potential-treatments.959438/