My 90 gallon tank is lit with 2 A360 Kessil lamps. I keep the spectrum pretty heavily shifted toward blue, because I like the look, but are there any guidelines out there for what might actually be most beneficial for the reef inhabitants? Perhaps the deep water corals might prefer more of a blue spectrum but those inhabitants living closer to the surface might like a shift more toward white light? Is it purely aesthetic or is there some thought that needs to go into the spectrum adjustment? I currently have a Kessil controller, so I have the ability to make automated adjustments in both intensity and spectrum.