whats corals?

[sweetrav18]

what corals can i place at the top of my AP 24g. I have tried a couple corals and they seem to bleach and melt witin several days. I need something that can withstand 150w MH at about 8 inches away. Pics would be good too.

[peacetypes6]

SPS? Have you tried any of them? You could acclimate them to your light over a few week period and im sure theyll be just fine.