You’re right, my mistake. Sorry, early morning here, I should have explained better
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This are the videos that Im talking about
‘’ We really need to know the wavelengths to be able to tell whether we can have big doses of a fairly safe wavelength or tiny doses of a really powerful wavelength. But we have electric lights to give all of these different wavelengths. And we are actively studying these now in my laboratory at the university these effects of UV. I can tell you our early research is… it’s tricky to get the doses just right because these are damaging wavelengths. But the goal is to use them to improve product quality. One of the things plants do when they get UV photons is make what we call secondary metabolites. Secondary metabolites includes cannabinoids, it includes terpenes, it includes vitamins – a lot of beneficial things for people. So if we can get the doses of UV just right, we have a potential to improve product quality. ‘’
Bruce Bugbee, March 2021
@anon85454369 you probably have seen these,I posted it just to serve as information for those who didn’t see it.
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I’m no scientist so I can’t tell if I’ve got good genetics and other lighting or if the UV is helping but I’ve got some serious frost deep into fan leaves and it’s real early in flower still, on my plants running just under 40 watts of 285/315nm florescents (they were on 12 hours for full flower I just dropped it down to like 5 hours mid day cause it didn’t make sense for 12 full hours). I’d like to try an experiment one day to see if they do or not when I don’t have so many different cultivars going and I can have a control group of clones of the same plant.
LED UV tech isn’t even to the point where you or I could afford to have it made yet from my research though lots of companies have been moving towards it lately
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I also dont use UV LED, the price is not worth it
I use my UV very high and for small time (15 minutes and on the last 4 weeks 30 minutes only at midday)
Sorry lot of cables on this setup, it is not my main setup, I had too much plants and had to reactivate this
A lot of frost on the girls aswell, but I never grow this genetics before
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beautiful plants and ladybugs hahaha 
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what are the ladybugs eating i tried introducing them but they just left
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they’re not mine, they are from @TestOfOath
They’re eating aphids and spider mites cause I’m a messy fucking slob stoner who can’t follow his own IPM lol and also can’t seem to ever completely shut my grow down to clean like I should. I don’t have it in me to use chemicals that’ll potentially harm me smoking so I try and do everything organic, ladybugs are natural predators of lots of things
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If they left is a good sign that you are clean? 
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Yeah, probably
Hope to see more papers about UV this year
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Holy crap, for me uvb starts at 9 for 5 mins then by the time it gets to 1pm its 30 mins, then by the time it’s 5 its down to 5 mins.
5 mins on 55 mins off
10mins on 50 mins off
Ect ect ect
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Nice setup. This remeber something that I saw on bruce bugbee video
This was what he said :
‘‘there’s a recent paper i i just cited this paper in anotherarticle and i’m trying to remember the journal but it was terrific because they showed that pulsed uv was far more effective than steady state uv and’’
But I coudnt find the paper.
minute 4:20 (I’m not kidding 
)
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This seems useful when making future light decisions.
Horticulture lighting group has done their research and it does in fact increase terpenes etc. go to their thread at riu. I use uva leds because you can run them 12 hrs starting late flower.
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Can you send me a link ? I didnt find it
This is likely the referenced paper on pulsed UV:
10.1111@pce.13409.pdf (1.7 MB)
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That’s a uva light, aka a black light.
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That’s what they tested their grow with. It works
I don’t have a link. Look up the HLG thread on rollitup it up. Go to grandmaster level on YouTube and look for a uv video. He has a weekly show and the owner of HLG is usually on there.
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Just looked, I think the videos are not online anymore ? I hope I’m wrong.
I’ve seen a few episodes before, but it looks like they got some kind of strike, too bad, I really wanted to see this specific video from the UV
Yeah gml always getting banned from YouTube lol.
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