When I finally got a hold of kessil to ask some much needed questions about light settings, the guy who I spoke with (and one of the upper guys in the tech department) said he just turns his on, leaves it, then turns it off when needed. He doesn't do the whole ramping up, then down thing throughout the day. He says hit corals do just fine that way. Considering the idea of lights raising and lowering is rather new (at least from what I understand as metal halides could be set to come on for so many hours but they didn't brighten and dim) do we really need to raise and lower the light? Also, what are people's thoughts on total darkness at night? I know with the kessils you can only go down to 5% at the lowest so they are still on with 0 blue (the bluest) unless you set it to completely turn off. I know some people like moonlight LEDs but I've never really seen much benefit from them other than looking neat.
I've done mine both ways and I admit, my corals seem to like having "night light" left on for them even if I run my light at a very, very, low setting throughout the day due to the shallowness of my tank. I do slightly ramp them up though, not much, just cause they don't seem to like it.