Do you need bright light to bring out the green? I bought one a while back but it was not that green when I got it and it hasn't turned all that green. I have 175W metal halide on about 4 hrs/day and 6500K fluorescents for 12 hrs. It is placed up close to the top but off to the side. Maybe it was just a crappy coral. I bought it as a small frag and it has grown quite big. It is a little green but not like that one.