I traded this for a old florecent light I had laying around, the kid didn't know what it was. I know its a montipora and I think its a pokerstar but not 100% sure. when I got it the stars didn't have and green coloration to them, now they are turning a nice green.
Far from peaceful, very invasive and will grow over most anything else under even under the worst of water quality... +1 to keeping it on an island in the sand!