So a couple of things that I have looked at with these lights. You can adjust UV, Red,Green,Violet,Blue,Deep blue, and white light. I'm not a scientist but I am not sure that corals are naturally receiving 100% of UV, White light, Red, Green. If it is our intent to mimic a somewhat natural habitat, wouldn't this aspect be the most important next to water quality? With that said, I am sure that you can acclimate almost any lower light coral to live or do well under more intense light than what they are recommended to have. I don't think it works the other way though.The second factor for these lights are the braces that you attach them to are adjustable. You can set the height. Just remember that when you set the height lower, you are in effect narrowing the coverage. This may help you get light to a lower level in your tank but there will be "blind spots" with a lot less light. I keep mine at max height and my tank is 12" deep. From the light to the bottom of my tank is 24".