Aiptesia outbreak.

This usually starts controversy but in the 4 years I have had a reef I've had 2 "break outs" and each time I added 3 peppermint shrimp (purchased from Aquatic Evolution) and within a few weeks to months they are gone. I also used pickling lime mixed with a little water to make a paste which is essentially same thing as aiptasia X or kalk paste applied directly on the lil buggers with a child medicine syringe with pumps off wait 20 min and suck the paste out with turkey baster after 20 min. While that worked unless you have a massive issue I would just try peps. If your moving tank you can cut the rock off but once those buggers are out of water they shrink up and are almost impossible to see and if you leave even a cell behind they can regenerate which is why the lazer craze of a few years ago just made peoples issues worse.

Fish 4 u has pepermints 3 for $15.00 and they had a bunch a few days ago. Pepermints always worked well for me. Good luck.

It's manageable. I popped up with a few recently in my tanks. Took two doses of kalk paste shot on them to get them but I think I got them. Just understand that it takes some time and you can get them. Peppermint shrimp is a good idea to clean up the one's you can't see. I need to get some.