Thanks for the continued help...support. All of our SPS are gone and our LPS are looking pretty bad. I don't know what category "plate" coral are in but we have three and they look bad as well. Its gotten to the point that even some of our zoas aren't opening! We bought a volt meter to check the tank, but aren't sure how to do it....so we haven't yet. No aerosols have been sprayed around the tank for at least two weeks. Temp is stable btw. 77-78. I'm not sure about the crack in the MH...if there is one, it isn't obvious. We have a brain coral that had grown completely off of its frag and now its regressing! Its gotten to the point where I don't even want to look at the tank! We are so desperate I asked the owner of the local LFS to come out, instead of one of his employees, and take a look. Unfortunately, the soonest he can come out is next Wednesday. Strangely enough, our bubble coral seems fine, or fox coral looks good, our cynaria still looks good and we have two chalices that are still eating. No rhyme or reason to anything it seems. Its strange to see our tank almost empty now.