So about two months ago a purchased an AI Sol Blue for my 60 gallon SPS cube. All corals are doing good except two that could be better. First issue, I am having difficulty getting my purple rim cap get its purple rim back. Second, my montipora stellata lost all its tissue in areas that are not receiving direct light. All other areas have great PE and still seem to be growing. Here is a list of the other corals I have. Green Bali slimmer- grows like a weed and has great color. Orange Cap- is another weed and good color. Tri color acro- small frag with good growth and nice purple tips. Red Planet- still red and green base but a slow grower. Blue milli- still blue but hasn't grown in months but still has great PE. And lastly is and elkhorn type of coral- good growth. Here are the water parameter- CA 430, Alk 7.5-8.0, PO4 - 0, Nitrate 0. This is a zeo tank as well. The lights max out at 65 white, 73 blue, and 75 royal blue. They ramp up from 10 am to 3pm, stay at max for 3 hours and then ramp down to lunar mode at 10pm. Hope this paints a picture. Many thanks!