I've never had luck with Red Planet frags, but I traded some hammer and acro corals for a large piece of Red Planet and am trying again. I figure a larger colony will have a better chance of survival. Parameters: Ca - 450 Alk - 7.3 Mg - 1290 PO4 -.04 NO3 - 0-5 I've had the red planet about half way up in the middle of my tank horizontally for about 2 weeks. There are three Rapid LED onyx lights on the tank. The end LEDs units are 60 degree optics and the middle unit is 100 degree, so less direct intensity. I've noticed that some of the tips on the red planet are white and have no polyp extension. it isnt all the tips, but where it has them, the tissue has been receding slowly. Not sure if its getting stung or just doesnt like the water parameters or is not in the right place. The other corals all are doing well, even prostrata and millipora.