i had major base recession happening to most of my corals a couple of months back . i'm not sure if it was due to low temp as the tank was set to 72f-76f, tank temp is at 79 now and every corals nicely recovering. one coral puzzles me though which is my red table. since i've had the coral it has receeded every year right around jan-march. also got 1 bali acro that completely bleached in 2 days. =o(
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