Alright, I decided to remove the crab (just in case). While removeing the crab I found about 4 very small snails on the coral. I removed all of them and the area underneath seemed to be pretty dead. Is there a small small snail that infests sps? I am just ventureing into the sps world (I have mostly kept sofites and lps, with the exception of a couple monti caps) so these different bugs and crabs you can get are new to me. thanks
dj