I bought a piece of live rock to help seed my tank several months ago. Noticed about a month later that I had an anemone growing in it and thought it was great to have something new in tank that wasn't a fish. I later learned that it was an aiptasia and killed it using Kalk paste. I've noticed that I have between 50 to 100 white dots that seem to be baby aiptasia all over the tank including the overflow and sump. I've read about the berghia nudibranch being perfect for the job, but they are expensive even more so if you have to have them shipped. Does anyone have a LFS that sells them that they get theirs from? I have a 120 gallon tank and guessing that I need at least 8 or so to start. Thanks!