My tanks been established for 7 months or so now and I would love to get a BTA for my reef. I've got an RFA right now that's been happy an healthy for the past month or so but they basically stay put so I don't have to worry about him. My question is if I got a small BTA what risk does it pose to my coral while it finds a spot to settle? I'm fine if it bothers them a bit but I don't want it to wipe out my coral. I've got zoanthids, mushrooms, and a few hardy LPS (Favia, dragon soul favites, and a leptastrea). Thanks in advance.