I spent a small fortune on pep shrimp. Made LFS put chunks of aip in the tank to watch them attack. Turns out they really like damaged aip but wouldn't touch my big ones. Bought an aiptasia file fish. He likes misis shrimp. Bought more peps. They like misis too. Now own stock in aiptasia x....no more aip. Me thinks that killing the big uns with aip (and still doing scans) combined with the file and the peps eating the babies that I can't see is the only combination that worked. I skiped the file fish step in my other tanks and have peps in all three. Still do random scans but think they are finally all gone. Couldn't have done it with some aiptasia-x though. Thats my story.