I can't figure it out. I have several monti's, superman, poker, and now a leng sy that have started bleaching, very slowly, from the edges. I have yet to lose one, but it's becoming a little annoying. All I can see is some small blueish starfish on and near the affected corals occasionally. I did see on GARF where they have ID'ed a few species of sps eating asternia stars. Any ideas? I think I'm going to pick up a harlequin to see if I can train him to eat the stars...