UVB supplementation for 33% more THC. Will this work?

twalte

twalte

Well-Known Member
I was reading that “ In University of Maryland studies of indoor-grown cannabis, sativa with no UVB compared to plants provided with equatorial sun levels of 385 nm UVB had a 33 percent increase in THC levels.”. Further reading on several sites has me convinced that I should be adding UVB to my grow for the last 4 weeks of flowering to increase the number of trichomes. With that said, I’m clueless. This unit seems like a great deal ...can anyone comment on the spectrum or brand?

californialightworks.com

SolarSystem® UVB

The latest generation high output UVB T5 fluorescent bulb. This system is perfect for a single light in a tent or several hundred lights in a large commercial operation.
californialightworks.com californialightworks.com

I’m supplementing a 1000watt HPS in a 5x5.

Can anyone comment on the brand or spectrum? It’s only 24 watts too....is that really sufficient?

Source. https://www.maximumyield.com/uvb-a-critical-frequency-range-for-genetic-activation-in-cannabis/2/17478
 

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DonnyTinyHands

Well-Known Member
I don't like that they don't specify which bulb they include. And it seems overpriced. Just get a t5 fixture and a pureUV bulb and you have the best available uv suppliment, know what you got, and save 20%. A powerveg or reptile 10.0 bulb would work as a second choice if you can't find the pureUV or don't want full blast UV intensity. They are about a quarter the strength of the pureUV.
 
Rocket Soul

Rocket Soul

Well-Known Member
It works afaik: youu ccan even smell the tent more when the uvb kicks in.

But its very finnicky to get right, some plants might like it, some might get very damagged depending on strain and where the geneticcs come from, distance to the uv and intensity etc...

But uvb is not 385nm its 280 and can get reallyy dangerous. Uvb iis almost missing from normal sun at sealevel

If youre interested in thiis you should follow @nachooo he runs various types of uv in sepearate settings
 
twalte

twalte

Well-Known Member
Rocket Soul said:
It works afaik: youu ccan even smell the tent more when the uvb kicks in.

But its very finnicky to get right, some plants might like it, some might get very damagged depending on strain and where the geneticcs come from, distance to the uv and intensity etc...

But uvb is not 385nm its 280 and can get reallyy dangerous. Uvb iis almost missing from normal sun at sealevel

If youre interested in thiis you should follow @nachooo he runs various types of uv in sepearate settings
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Thanks for the answer Rocket. I just found a UV thread with Nachooo. I’ll find that and follow him. I did end up buying two California solarworks UV lights that run at 280nm. Excited to see the difference.
 
Rocket Soul

Rocket Soul

Well-Known Member
Be carefull with looking at them directly and generally just turn them off when your in your grow. Cant remember who but they had a little sparkly/blind spot in their viision for several days after lookiing too long.
 
twalte

twalte

Well-Known Member
Rocket Soul said:
Be carefull with looking at them directly and generally just turn them off when your in your grow. Cant remember who but they had a little sparkly/blind spot in their viision for several days after lookiing too long.
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Thanks again! Yes, I plan to kill the UV lights when the tent is open. Definitely don’t want to mess with my eyes or risk skin cancer.
 
Tstat

Tstat

Well-Known Member
Hmm, maybe I need to get one of those. I’m always looking to up my game. I am currently running about 1000 watts of COB and boards in a 3x7 area.
 
twalte

twalte

Well-Known Member
Tstat said:
Hmm, maybe I need to get one of those. I’m always looking to up my game. I am currently running about 1000 watts of COB and boards in a 3x7 area.
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If you do...I used a coupon code “FB15” for 15 percent off and it’s also free freight. 85 bucks delivered..for up to 33 percent more trichomes seems like a deal to me. Haha.

I ended up buying two for a 5 x 5.
 
2

2com

Well-Known Member
twalte said:
85 bucks delivered
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That sounds like a deal. I'm very interested to see how they do for you.
Do you have anything to share - for example I'm interested in that bulb that send with it as well. You said you measured it right? 22". I wonder if agromax t5 fit in it. Either way, I guess one could do what @DonnyTinyHands suggested too.
 
twalte

twalte

Well-Known Member
2com said:
That sounds like a deal. I'm very interested to see how they do for you.
Do you have anything to share - for example I'm interested in that bulb that send with it as well. You said you measured it right? 22". I wonder if agromax t5 fit in it. Either way, I guess one could do what @DonnyTinyHands suggested too.
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Seems like a deal. They charge 59 for a replacement bulb and the fixture with bulb is 85.

Here’s one more good conversation about UVB and it includes several links to articles in the first post.

Your Grandpa's Weed or is UV supplementation really needed?

They say that today's weed is not your Fathers weed, well it's not your Grandpa's either. As an old Hippie that came of age in the early 70's (and who is now a Grandpa) I smoked your Grandpa's weed and it is what I breed and grow. Complex euphoric highs that have no ceiling and last a good while...
www.rollitup.org
 
Renfro

Renfro

Well-Known Member
twalte said:
I was reading that “ In University of Maryland studies of indoor-grown cannabis, sativa with no UVB compared to plants provided with equatorial sun levels of 385 nm UVB had a 33 percent increase in THC levels.”. Further reading on several sites has me convinced that I should be adding UVB to my grow for the last 4 weeks of flowering to increase the number of trichomes. With that said, I’m clueless. This unit seems like a great deal ...can anyone comment on the spectrum or brand?

californialightworks.com

SolarSystem® UVB

The latest generation high output UVB T5 fluorescent bulb. This system is perfect for a single light in a tent or several hundred lights in a large commercial operation.
californialightworks.com californialightworks.com

I’m supplementing a 1000watt HPS in a 5x5.

Can anyone comment on the brand or spectrum? It’s only 24 watts too....is that really sufficient?

Source. https://www.maximumyield.com/uvb-a-critical-frequency-range-for-genetic-activation-in-cannabis/2/17478
Click to expand...
Just be aware that too much UV will burn your plants. I learned this the hard way lol.
 
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