Dave. I have a 90 gallon reef. My lighting is 2-65 watt 10K power compacts, a 40W 10K flourecent, and a 40W actinic flourecent. I have mushrooms down low, and leathers midway. I also have a bright green bubble coral, and a huge colt coral. All my corals are doing great and they are thriving. I also have no algae problem. Granted I would not even try to keep hard coral or other intense light corals, but I have chose lower light corals because of easier maint due to the theory of lower light usually means less algae, along with the money issue. I love the power compacts. They produce lower heat so a chiller on my tank isn't needed. I also use the 10k's with just a little atinic to get the brightest effect I can with the lower light. 10K's have quite a bitt of blue in them already so lots of atinic is not needed.
