Good thread but lots of info that may be conflicting. However, some great points being made. The best i think is dont change lights to chase color. All corals if given the correct conditions for the amount and intensity of light they are exposed to will develop good or great colors. Some lights however, T5 in particular seem to work better under lower nutrient tanks. I believe this is due to the lower intensity light. In my experience, corals can do well in a tank with much higher nutrients than commonly maintained. However in order to keep some corals from showing brown in the higher nutrient systems they need higher intensity lights to force them to develop the deep rich colors you can obtain in a high nutrient high light high flow tank. My corals seem to be able to handle more light under the higher nutrient load. If the light is intense enough none of my corals get brown no matter how high the nutrient level is maintained. Over the years, I have kept sps under flouresent, t5 and vho, metal halide and now leds. I got great color with all of them. However, the halides were the easiest to manage and they gave my the brightest most consistent colors. I just removed 2400 watts of halides and replaced them with 4 homemade LED panels about 120 days ago. Some of my pieces are developing the deepest colors that I have ever seen on them. Some have lost a little of their pop but none of them have stabilized enough to call it. Most look great and my electric bill droped almost 200 bucks a month so i can live with it either way. Great thread though, good to see people looking at water quality instead of lights to fix their color. After you learn to manage that you can get good colors no matter what kind of lights you use.