I just put 2 sol ai leds over my 90 gallon i was blown a way with he colors i can make and the shimmer i get im very happy love the thunderstorms and how it does ramps up and down i could not be happer i went with all 70 optics and have no dark spots im seeing colors in my corals that blew my mind my greenbay packers are allsome my clams are out of this world and my war coral wow no more chiller and good buy heat and high electric bills i was so blow away to see the shimmer i did not think you would get that with the led my leds are white 30& blues 40% royal blues 45% to start out and doing 5% each week i took off 2x250 watt hqi metalhaides 2x54 watt t5 and 4 x65 watt pc lights has any one done a post on ramp up times and what you runnign your leds at? If so please post link thanks so much