LED Lighting Questions for Auto's

So, I am on my first run of auto's and was wondering at what point most LED growers will turn on Bloom switches to offer an extended light spectrum? I am running a 450w 12-Band LED

Also, does anyone feel that one light schedule is superior to another specifically for growing auto's? Right now I have them on 20/4 but am thinking of increasing the dark period to promote faster growth. Thoughts?

Thanks! I've also asked these questions in my journal if anyone feels like following along and commenting there.

:thumb: :peace: :tokin:
 
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