your photo period a bit weird.... personally i try to simulate the sunrise, day , sunset sequence.
Example:
blue 1 hr
blue+white 7 hr
blue 1 hr
your can play with the numbers or maybe 0.5 hr, then 6 hrs, then 0.5 hrs
can also start from 4pm so lights off will be around 11 pm
Plenty of time for you to admire your tank then.