730nm supplement light, best way of using it?

hey thanks everybody for the input, helps alot. @BraveheartGenetics Yes that is what I researched /concluded too.. my Kingbrite boards have 32 x 660s, I just don't know what wattage really.. I'll try to measure that later.. I also thought about leaving them on in flower all day just like you're suggesting it. so far my research suggested, that the plants will only stretch too much, when like you said, 660 /730 rate is not right.. as I understood, only the 730 penetrates down to the lower leaves, lets say for example through tree tops down to smaller plants in nature, that is why high 730nm ratios, signal shadow and cause stem elongation to shade avoiding plants... but also red spectrum promotes flowering... wasn't sure about the rate and such... luckily I can dimm down my 730s... as I understand it, 660nm give a signal to stop stretching, and 730s do the opposite.. I think I will run the 730s all day long now. maybe only after the flower stretch... to keep that in check. and then a few minutes longer than the main lights, to get that sunrise-sleep initiation thing going, if it exists:) IdK if there is any real data on the "putting plants to sleep" thing.. but worth a try. @Organoman I've read that 730nm about 10 minutes before lights off/after lights off before the night period switches some phytochrome-thing or so.. which puts plants to sleep way faster than just turning lights off... hence giving the plants more time to produce the "night hormones", so you can get away with shorter night period, longer day period.. just like outdoors plants will flower already at 14 hour of daylight... sounds logically to me. and this at the same time gets you 10% more yield cause you get more light per day basically. my light is just a bit weak for 5x5 or almost that area, so I thought of trying something like this:) all that stuff makes me wonder what NASA does to research that kinda stuff. I've seen some pictures of their space-planting, but never seen anything impressive, more like amateur-stuff./blurple shit.. lol Glad that Dr. bugbee, now educates on YT:)

you should follow Shane at MIGRO, he is the light KING. From what i know it is used for more stretch and wider leaf structure in plants as it replicates shaded light. I use it in Veg.

I think the other answers are confusing this type of red light with UV light, which is something else all together.

Just have them all the time during the flowering phase, that is what they are for. If they are photoperiod plants they won't flower at 13.5 hours of light. If they are autos they won't yield as much as they can at 13.5 hours. Not sure why you want 13.5........

If i remember correctly its done before lights out for like 10min. But will want to gather other references as im pulling this from a shot memory. Google may provide some clarity. Good Luck!