Ok so i bought a frag plug a little while back of Xenia and within a week it all died off and released from the plug. Some of it pulsed for awhile. Others just didn't. Now i'm diddling through my tank and low and behold i find a single polyp, on each end of the tank that has taken root in the sand/LR and is now pulsing. I thought these needed more light and flow? Now they're getting less then before. Ideas?