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Old 11-09-2020, 04:07 PM #1
weedlover_89
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Using UV light to lower THC concentrations?

Hello to everyone,

A friend of mine grew legally CBD plants but the problem is the outrageously low THC limit of 0,2%. After he completed the harvest he sent samples of the buds for lab analysis and results came back showing 0,6% THC and 13% CBD. Now he cannot legally sell those flowers.

He read about UV lights being used to lower THC concentrations...? Does any of you guys know more about the subject? Anyone who has tried it perhaps? Thank you very much for any answers.



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Old 12-07-2020, 10:13 AM #2
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UV degrades just about everything! I think heat and light degrade THC. UV could be a big player as far as hitting it. Does he just need to get a small sample to pass? Or random pieces of the lot?
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Old 12-16-2020, 08:27 AM #3
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Uvb has been known to increase thc production.
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Old 12-16-2020, 04:00 PM #4
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Uvb has been known to increase thc production.
That's while the plant is growing, but the same things that will grow plants are the same factors that degrade cannabinoids after harvest- light, air, humidity, temps.

It's an interesting idea.

Not sure if these two links will help but it's a start.
https://www.icmag.com/ic/showthread.php?t=47174

https://www.tandfonline.com/doi/abs/...50610903258144
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Old 12-17-2020, 09:30 AM #5
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Adding UVB during the last 2 weeks of flowering can add up to 27% more THC to the plant. But it's given in small doses, depending on how high the light source is from the plants. It could be as low at 10 minutes 3X a day. There's some links in my Orange Gasm thread that discuss college studies on the subject.

But the issue is it's a really bad light on the human body, mainly the eyes and skin........ plants don't really like it either, and produce more resin as a defense mechanism to defuse the UVB before it hits the leaves.
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Old 12-17-2020, 09:53 AM #6
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Uvb has been known to increase thc production.
Agreed with this.
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Old 12-18-2020, 01:09 AM #7
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in the EU we now have a limit of 0.3% Total THC,
yeah such a machine exists and is used widely as most cbd growers have this problem!
no idea what kind of tech it uses though, only know its about 20K to get one
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Old 12-18-2020, 01:10 AM #8
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also, one has to start testing in week 5 to be sure to not pass the limit
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Old 12-18-2020, 01:21 AM #9
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yes i heard the same. seen a doku about cbd-producers. i also can remember they used it while curing buds, not while growing, wich another one stated. seen a video of them dooing it whilst curing.
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Old 12-18-2020, 02:46 AM #10
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yes i heard the same. seen a doku about cbd-producers. i also can remember they used it while curing buds, not while growing, wich another one stated. seen a video of them dooing it whilst curing.
remember the name of the documentary?
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