about a week ago my wife and i took a vacation to florida. i put my sister in charge of my 55 reef, she has taken care of my tanks several times with no problems. i was gone for 2 days when she called me and said the water in the tank was getting really hot, about 92 degrees, i have never had problems with my tank temperature before but the AC wasnt on when we were gone and air temps got into the high 90s for about 3 days. needless to say every bit of coral in the tank( except 9 green mushrooms ) has melted. i had a 7 inch tridacna derosa clam, some pulsing xenia, about 40 mushrooms, some orange ricordia, some athelia, pink and green star polyps, and a couple devils hands. the tank is now covered with cyno, the only thing left alive are 9 green mushrooms, snails, hermits, yellow watchman and my 2 clowns. is there a chance that any of the coral might regrow from small particles left on the rock? if not i am looking at tearing down the tank and starting a breeding tank for clowns. any help would be appreciated.