Dog: interesting observations and ideas. It seems to follow the pattern outside that as fall progresses, the B:R ratio increases even as the day shortens and the night lengthens.

How about this:
You keep experimenting with the day, and I'll keep my experiment going with the night until I figure out the time rate of the night light that I'm using. Once I find that, I'll play with daylight color spectrum to see if that alters the effects of the night spectrum. If I'm changing both day and night spectrums at the same time, I won't be able to tell which one is making the difference. Also, I changed down from 42w to 26w 6500K bulbs because of heat issues, and the only 2700K bulbs I have are also 42w, so I'm not sure I'd be able to use them without cooking the plants.

There's a whole lot to be investigated here, and if you work on one part while I work on another, we can figure things out at twice the rate! :thumbsup: