Quote Originally Posted by ramsey View Post
I'm battling the same thing at the moment. It's not terrible but it's time to do something. I ordered some Berghia nudibranches from berghia.net. I've heard that peppermints will only shred up the aiptasia to get to it's gastric cavity (?) and eat that. It won't eat the actual aiptasia and will cause it to spread. I've tried Aiptasia-X and I may as well have just feed them mysis. I think the nudi's are the way to go (from my reading) but there is a serious consideration. The diet of the nudi's consist of aiptasia. They don'y eat anything else. In other words, it's possible to get rid of the aiptasia and have all the nudi's die. I had a long talk with Larry (owner of berghia.net) and he said to start off with a small amount of them and give it about six months. This will allow them to reach maturity and possibly survive and combat subsequent outbreaks.

I have a post asking for feedback on the Berghia Nudi's but have yet to get any response. From what I've read, they seem like a winner but I've not had direct success using them (yet, HOPEFULLY!).
Let me tell you from recent experience that Berghia are monsters when it comes to eating Aiptasia. I just watched one plow through a 1/4" anemone in just about 30 seconds.