Aiptasia X seemed to double my population... I threw the bottle away. The Peppermint shrimp just waited for me to feed the tank and the amount of Berghia I figured I'd need would have been out of my budget. My last ditch effort was a Matted File fish. And within a couple of weeks the entire aiptasia population was gone. Make sure it's the Matted File fish as there are several kinds. If that doesn't work...