@Or_Gro you should have a look at this. Green light and how it is now believed to affect the plant. I could see you testing this between your two tents. The article is from December 2018.
https://www.maximumyield.com/green-means-grow-how-green-light-affects-plant-growth/2/17445
Thanks man, keep sending em...no disrespect intended in the following....
Read that one, and others, before.
Imo, while true, the elephants in the room are not discussed:
1. What besides ‘overall plant photosynthesis”, does green add to the mix.
2. The benefit above, occurs at a higher efficiency at the canopy bottom (“deeper penetration”)...but does it really matter given that overall ppfd at bottom of canopy is so much less than middle and top?
In other words, do you value a few more grams of larf, or would another oz or two at top (from red) be better?
3. As with everything, there is a price, a benefit, and the ratio of benefit to price (called “value”). If you have a limited budget, which colors provide the most value?
4. The article is focused on hid not white led, which is obvious when you look at white led spectra, in the nm range 450-550:
96elite V2
Eyeballing it, looks like somewhere between 0.3-0.4 average relative intensity for 450-550 nm range...a substantial amount of green
288v2
Eyeballing the 3000K, same, if not more.
If i spend anymore time on spectrum, it’ll be on uv-blue end of spectrum, which are already known to be critically important to prop/veg, photosynthesis, and terps/thc/other cannabinoids.
When i see reports of a green supplemental light driving signif yield increases or other gotta-have benefits, i’ll take it more serious.
I am doing one more smackdown focused on lights, then i’m focusing on other things related to growing reef; mostly, growing as many diff strains as possible.
These white leds are fuckin great, and can be specifically supplemented with other colors. I think that they have already maxed their photosynthesis potential, and future improvements will primarily be efficiency, mixing, and controllability.
Adding more green to white leds is a waste of $’s if all they do is add to “overall photosynthesis” or “penetrate deeper”, that can be done cheaper and with added benefits by blue or red light positioning and/or intensity.
