Moonlight/Low light question

[coloradoreefer94]

I am running my lights for 12 hours a day, but for my viewing preferences I like to run very low violet and blue at maybe 3% or so before and after lights "turn on" to simulate a "moonlight" effect for when I wake up and before I go to bed, so that I can enjoy the corals fluorescence. This really only allows about 6 hours of total darkness for the tank. Is this healthy for corals fish and inverts, or is this very low light disturbing them from getting the total darkness rest for 12 hours that most reefers do with their lighting schedules?

TLDR is using very low blue and purple light for 6 of the 12 dark hours harmful for corals invers and fish?

Schedule: (1 Noopsyche K7 Pro 3) 20g mixed reef tank
6AM-9AM moonlight 3% blue/purple
9AM-12PM Ramp up
12PM-6PM 50% Blue and 25% White Full spectrum
6PM-9PM Ramp down
9PM-12AM moonlight 3% blue/purple
12AM-6AM total darkness

 

[cdemoss01]

I run normal moonlight levels for 3 hours.