i'm still playing with mine, but I use artificial mode. Started at max 45% brightness and have ramped it up by 5% every saturday..i'm currently at max 75% brightness and my corals seem to be doing okay. Going to shoot for a max 85% brightness this saturday.
My sunrise starts at 11am at 5% intensity-all blues, then 5k, 7k and on to 10k until 3pm, topping out at 45% brightness until 3pm
From 3pm, i'm at Max Brightness at 75% brightness at 14k from 3-7pm
7pm-10pm I slowly ramp down from 75% down to 60% to 30% at 18k
10pm-11pm it goes down to 20 to 15% intensity all blues again