For some reason in this tank im having the hardest time keeping acropora. My Red Planet seems to be fine but has lost all of the green base. All water parameters are good. My Nitrate could be a little lower but isnt to high. About 5-10ppm. 0 phosphate, 450 calcium, 8-12 DKH, 1300, Magnisium. Is the light on this tank not strong enough. Ive been running a 20k XM bulb now for the last 4 months with the actinic upgrade. Halides on for 6 hours, and actinics 1hr before and after. Any ideas why My Acro isnt liking it in there. Its pretty high in the tank as well. Thanks, Jeff