[ozzy_200769]

I am assuming it's a reef tank, can you remove your coral to another tank?
Peppermint shrimp will help in a reef
Copperband butterfly will in a fowlr tank
Theres this stuff called "Stop Aptasia", I use it in my fowlr but I only have a few, I personally am waiting to get a Butterfly from my lfs.
You have to inject the stuff to kill the aptasis, you don't want them