I'm also using t5 bulbs with the 3 kessils I have a great idea of what colors of corals look like . Between the t5's and the kessil's I have achieved a spectrum I really enjoy looking at . During the main lighting period my tank looks like a normal reef the t5 bulb combo mixes great with the kessils at %100 blue , then at night when I turn my lights down the tank has a nice glow to look at for a couple hours and enjoy the florescence of the corals . If the coral fluoresces under the led is that not part of the true color of the coral ? I mean you are not actually adding anything to the coral to get the color its part of the coral so why not accent it ? .I'm not out to sell fags of saturated corals , also not out to try and "teach newbies" to use a specific type of lighting. I mean the hobby is based on personal enjoyment , well at least for me it is . So if my corals are doing great , they grow , I love the look of my tank , where along the line did I start moving backwards for running my led's at %100 blue ? :facepalm: