Can anyone help me identify what is in the attached video. I am thinking digitate hydroid? I do not see anything at the base where the tentacle comes out of the rock so hard to remove since you can not see where they come from. They appear to have come from an coral Frag I recently added. I did dip they frag prior to adding to the tank. How quick do they multiply? How do they move about the tank? How bad of a pest are they. I believe they came in on a GSP that I added because I can see them on the frag at night when the polyps are closed.. Durrimg the day I don’t see them on the frag when the polyps are extended.
https://youtube.com/shorts/evsadAmQ6KQ?feature=share
https://youtube.com/shorts/evsadAmQ6KQ?feature=share
