I came home last night and saw that my open brain coral has lost about half of its flesh. my water is good and everything else is thriving. when i first bought it a couple of weeks ago i thought it would look good on top of some rocks, but just recently read that they should be out of the direct light. when it started to bleach out i put it on the sand, but now its half way gone. its now under some rocks so its not in the direct light. any thought of why it is dieing? is 4 65w pc lights too much for a brain? is there any way to revive it? please help!!