@Noddykitty The reason moonlight and street lights don’t affect the plants usually is because the light source needs to be 50 ppfd or higher. That equates to 50 um per second or 50 micro moles per second. The moon light is only .01 um even during a full moon so it has no photosynthetic effect on plant growth.
Street lights also rarely reach high enough ppfd to affect plant growth unless you are growing your plant within 24 inches directly under the street lights as most are only 400 watt bulbs with reflectors at 90 degrees.
The reason light leaks indoor cause more issues isn’t because of the deep sleep or the red it’s because of the spectrum and intensity. An average led/cfl bulb in your home can put out 50 ppfd or more easily. Even those 13 watt cfl/led incandescent replacements. In order to avoid light leaks indoors you need to make sure all lighting is far enough away that it is under 50 ppfd at the tent. You can even go as far as to get diffusion screen for any lights near your grow area.
As far as the deep sleep theory regarding the red spectrum it is actually dependent on the ratio of red to far red usually express as r:fr in light studies. Far red does “put the plants to sleep” as some refer to it but really it just flips a genetic switch in the chlorophyll that turns on the genes that make the plant stretch for light like they do during the dark period anyway but while still using photosynthesis so the plant uses the sugars it is making instead of storing them.
If the far red (not ir) exceeds the red or deep red it tells the plant that night is coming or that it is in the shade and it will either make the plant stretch or shut off photosynthesis all together until the red and deep red exceed the far red and “wake the plant up.”
There are different ratios you can use indoors to accomplish different tasks but I would suggest not using a lot of far red. Red and deep red are great and work well with uv and ir to get plants to produce more trichomes and anthocyanins but if you use too much far red it will make your plants lanky and they won’t develop as many terpenes and anthocyanins as they should and it will also inhibit trichome production.
I myself don’t currently have the tools to measure light to do my own experiments to find the right ratios of far red to deep red but I do know for a fact that if you turn all lights off and use a far red bulb during dark time and then use a deep red/red bulb first thing at lights on and turn the far red off it increases the efficiency of photosynthesis during lights on.
I also know that during lights on you want a lot more red and deep red than far red. Ir is useful too at increasing the penetration of red and deep red to increase the efficiency of photosynthesis. If you don’t have the tools to figure out the ratio it’s best to just cut far red out all together during lights on. You can leave ir on 24/7 and it won’t really affect the plants without having the red on.
There’s a lot more to this and I can literally almost write a book on it, but instead I’ll hunt down a few of the studies I’ve read and post them here.