Suggest a montipora capricornis or montipora digitata. Possibly a green slimer. Guess I'll let the even more experience suggest further. I've been keeping my monti caps alive and growing for almost a year though, and the recent frags I've gotten are all polyping out nicely and show growth on the tips. I'm dripping kalk finally and keeping a close eye on my levels, partially with the help of my AC jr with pH probe. Just tested my nitrates about an hour ago and they were at zero or dang close...I couldn't see anything registering. Anyway, I would personally recommend the monti cap as something to start with and see how it does.