Under canopy LED’s
- Thread starter BH
- Start date
BH
Tha Dank Hoarder
FAVEN answered back ur questions and info via email . Hope this helps?
“
Far red can increase stretching. We suggest using far red for 5 mins after the lights shut off.
We suggest starting far-red sometime between weeks 1 and 2 of flower. Although that is with our lights. I have no idea what the quality or strength of the pucks you are currently using are. It's hard to give advice on other companies' equipment. If you are interested in Favens, I would be happy to work you up a quote.
I hope you have a great day! Talk with you soon. “
Castle Green Skull Labs
In Bloom
Not sure what you are running for lights, 15 mins before and after is better than 10-5. With 10-5 you are not getting full benefits and your giving more of hint that day/night is coming.
Far-red light (around 730 nm) rapidly shifts the plant’s phytochrome system from the active form (Pfr) to the inactive form (Pr) etc
With 15 mins you’re getting much more complete phytochrome pool, stronger more consistent end/start of day signaling, it can enhance faster stomatal opening/closing timed earlier metabolic shift into day/night respiration phase and most of all more photoperiod perception which is important in short day plants like cannabis.
Phytochrome conversion isn’t instantaneous across all tissues. Leaves at different angles and canopy depths receive different photon flux. Longer exposure increases the total
Conversion ration.
So 15 minutes tends to produce a more uniform whole-plant response.
Past a certain point, you hit diminishing returns, once phytochrome is mostly converted, more far-red doesn’t keep adding benefit.
I don’t run my far red during lights on till around week 3-4 of flower as I find the signaling to shade leaves tend to be a bit much. Node spacing will be further apart etc, I run mine around what would be mid day upper and lower far red with upper uv far red for 2-3 hours and uv 1-2 in between the far red period and I slowing bring that time down week by week till until end of flower.
Caddis
Zinger
I was running that timing, but I’m testing the cycle Faven is running. I have no idea what’s what?
I’ve had these pucks for years and there are still questions regarding their usage.
Are you basing your timing on experience or a study you read?
I made the mistake once getting in a hurry to run FR, made a stretchy mess.
Castle Green Skull Labs
In Bloom
Both, my experience and the science backs it up. I’m only running 45 watts total. 15 above canopy and 30 under canopy far red. Again anything over 15 mins is not really worth the gains and under 15 mins is again more of a “hint” not full on conversion of phytochrome. You’re still getting benefits, but not as much as you could be. You can skip running the extra far red during lights on and skip the Emerson effect and just using it for day/night signaling if you are getting to much stretch. Can I ask what your full lighting set up is?
Castle Green Skull Labs
In Bloom
One thing I will guarantee you, I will never push bro science. If it can’t be backed up by peer reviewed studies and data. Then you won’t hear it from me. I’m all about the science man!
Caddis
Zinger
I’m not going to dispute your findings, because I don’t know. However I have to believe Faven is working this based on science?
According to Dr Bugbee, we are just scratching the surface, so I’m not sure anyone has figured it out?
Lights I’m running:
(4) HLG Diablos
(16) Cree CX3590 80 3500K
(5) Atrium 50w strips 3600K (under canopy)
(2) Rapid LED Far Red
