Hey. Folks I'm as green as the algae in my tank as far as marine stuff goes. Anyhow, I had a problem with aptasia well actually I only noticed it on one rock and it seemed still quite small but it scared me. After looking around and searching sites, I finally decided to try "Joe's Juice" . I have to say I was quite impressed. No mess. No trying to stab the little buggers with a needle. Just put it near their mouths and they suck it up like candy. Next thing you know they're starting to curl up in their little holes and they're dead. I definitely wouldn't recomend it for a big problem but if you need to nip them in the bud, so to speak, it's a pretty good product. I have a small tank so I didn't want to confine a Copper Banded Butterfly in that little space. I have heard mix opinions on peppermint shrimp and berghia are near impossible and highly expensive to get. Hope it helps. I'm hoping someone can help me out with the many problems I'm sure to run into. Mabuhay!