Hello, I’ve included a picture for some identification. Hopefully this isn’t the wrong section to be posting this. It looks to me like hydroids, I noticed these growing a few days ago, did some research and manually removed most of them and stopped feeding reef roids yet they continue to multiply and I'm afraid it’ll reach the rock if they haven’t already. I understand they bother the coral and I have no idea how to get rid of them. I think I’ll take it off the rock and place it in the back right corner of my tank in the sand away from everything for the time being, no idea if it helps but worth a try. Any advice is helpful. 
