Looks a little like a Montastrea to me, because of the contrasting patches of color. Well, very nice regardless of name.
Marc & Justin: Well, since the other household member was away from home this weekend, only the actinics alone were on yesterday afternoon. Longer than usual, but since I was working 2nd shift. BTW, these alone are nearly as bright as the old ones. Would they really burn my Favia? I'm not concerned with the Rhodactis/Discosoma weeds on top of the reef, but my hard corals are another matter!
Matthew