If you have AEFW good luck. I just finished dealing with that and man what a nightmare. Weeks and weeks of dipping coral. once a week everyday for at least 8 weeks. Not a fun process at all, sure hope you dont have these ones and have the red ones instead. Far easier to get rid of them. Flatworm exit works well for those.

Both my 8 line and my melanurus made short work of flatworms in my previous tank. Literally all gone in a week.

I recently got them on a frag in my new system. Had them all over my frag tank. Put my 8 line in there, and they were all gone in 2 days flat.

If you have AEFW, start over lol.