really? On one bar it takes about 4 leds x 2.5 V at 550 ma for 30 minutes. That sure is a whole lot of relative wattage. and your worried about efficiency ? ha!
One of your problems is that you are interpreting as 660 as awake and 730 as go to sleep. That's wrong, its MUCH more complicated than that as the experiments with flashing 730 nm AFTER a period of dark actually stops flowering similar to a flash of 660 nm part way through the dark cycle.,
As I said, you're right it's no big deal. But, being cynical, that also goes for doing a 360 jump everytime you open the tent. What purpose do you think this sunrise emulation serves? Besides, I was rather referring to people having the 730s on the whole day. If this turned out to be enhancing something (e.g. swell after stretch), I'd also look for efficient alternatives. I'm open to info about swell lighting setups, but I believe it's hard to find empirical evidence on that due to our well known error margin.
I'd also be interested in those mentioned studies that show negative effects of "lights out, 730 on, 730 off, lights on" during the day. Just this afternoon I showed the 730 lights to a friend ("Woa, seems like I have an insect's vision or something"), doing exactly that. Do you think that had a negative effect, if so, on what? To me that would be totally counter-intuitive, because to my scientific standards flowering our plants is not about the light of the day, but rather about the dark of the night. Plants get temporarily shaded at daytime by all kinds of incidents in nature.