unknown pest

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!

Hello everyone, I hope this message finds you well. Attached is an image (as close up as I could get of a new arthropod in my system. I believe it is an unwanted sea spider. I have only noticed them on glass and back panel of my AIO system. There are a few dozen at this point and i only...