This is tangential, but given that green light is a commonly used light to work during the dark period with flowering plants, I have long wondered if you could use LED lights with specific wave lengths that don’t trigger phytochrome and/or specifically keep it in the Pr (inactive) state to artificially drive photosynthesis during the ‘dark period’ for short-day Cannabis.
Interesting really.but I think either the plant is sleeping or photosynthesising but not absolutely necessary. Green light is important too light should have same green as yellow or violet and IMO be well mixed and point source as possible. Moon? I mean you don’t need to remove purple light cos purple plants have a phytochrome as such. Or red plants etc…- feed less n see more others