I recently returned from a weekend vacation (Friday morn, to Mon eve) to find my tank in total disarray. My inverts were dying (my bubble coral is already dead, brain still has tissue but not looking good, candy cane in same state). Any suggestions on why, how, this happened, and any prescriptions? The tank probably went a total of 48 hrs (+/- a few hrs) without any attention, but looked great on Friday morn when I left, and a buddy even stopped by on Friday eve. to feed my seahorse (which is alright). I did a 10 gal water change upon arriving home, and plan to do another 5 gal today. My nitrates were a little high, but the calc., and pH were right on. Any suggestions on salvaging the remains of my brain, and candy cane? My specs are: 55 gal, at least 3 in. sand bed, 2 skimmers, 2 1200 Maxi-Jets (295 gph) moving the water around the top for good evap. rate (is that too much gph? too much current?). I add iodine regularly, and maintain my calc. level, and do regular water changes. My mushrooms and polyps aren't looking that well, but for some reason my Yellow leather coral looks unscathed if not better than when I left. Please help!!