So I have had this frag from a month or two and was doing great for the longest time. It seemed like over night half of it turned white. the polys are still there they are just white. I thought that is was just bleaching due to, to much light, so I have had it in the sand for about two weeks. So far it has not colored up like when I got it. Am I being inpatient or is there something else I can do? All my over SPS are doing good even the one that feel behind a rock a month ago. So i know they are getting enough light (or at lest think they are). Could it be flow?