UV Suppliment Lighting

hybridway2

hybridway2

Amare Shill
end_of_the_tunnel said:
Very true.
But enough have some faith in UV supplimentation, to keep this thread going. What would be a concern for me ,personally, is pushing vague information out to bolster the case for use. There is potential for harm. (this is not the far red thread where someone blithely tells a newcomer to run for 15 mins and the guy ends up with a tent or room of stretched out plants from excess far red.)

If I have a cutting that is consistently testing 18%, but using some UV lighting product gives me a 4% increase on that.

18 x 0.04 = 0.72
0.72 +18 = 18.72

Result 18.72%. Worth it? And that potential percentage increase is going to vary by cultivar and the type and amount of lighting. Now what if you have some famous high thc varieties? Testing mid 20's? Wonder what the likelihood is of those getting an extra 20% on top? The devil is in the details.

Realistically outside our capabilities, to make statements without accurate measurement and repeatability. What we can do in this thread is read the research papers people have taken time to post. Read the posts giving details and examples. Use that information for a general starting point for levels of supplemental light.

Hopefully it will become easier when sensors become cheaper and more widely available. Then everyone can be on the same page.
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Planning on getting lab results on next SBS/SBS, one of the lights uses 390nm & 730nm but is a lower efficiency because of that. Id like to make the bud as strong as possible but not if it means losing much weight.
 
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end_of_the_tunnel

Well-Known Member
Scroll down to examples on linked page. This implies huge variables in results. If I were to follow this train of thought, then logical to believe that grower A changes one thing in their grow and gets surprisingly different results from grower B, whilst both using same light and cuts.

UVR8 Chemical Profile Shaping in Cannabis — AgricUltra™ Advancements

The potency of high quality marijuana increases in direct ratio to the amount of UVB light it receives.
www.agricultra.com www.agricultra.com
hybridway2 said:
Planning on getting lab results on next SBS/SBS, one of the lights uses 390nm & 730nm but is a lower efficiency because of that. Id like to make the bud as strong as possible but not if it means losing much weight.
Click to expand...
 
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end_of_the_tunnel

Well-Known Member
hybridway2 said:
My theory is you dont need to potentially damage your crop or top of crop, or any losses using UVB (many do not know exactly how to use it). I believe UVA is safe for the plant & will still give the up to 20% increase in thc's. It's also readily available in led made well enough to last.
Time & tests will tell.
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Valoya and Grow Lights Australia are already showing results with minimal UVA.
 
Bosgrower

Bosgrower

Well-Known Member
I haven't read this entire thread, so I apologize if this is redundant, but I think this article might have be of some value.
mammothlighting.com

Why UV – Mammoth Lighting

What Effect Does UV Light have on Plants? by Vanessa Nielsen, PhD UV light is radiation with wavelengths between 100 nm and 400 nm and it’s not visible to the human eye. UV light makes up about 10% of the total light output of the sun and is divided into several subtypes. The three subtypes...
mammothlighting.com
 
hybridway2

hybridway2

Amare Shill
end_of_the_tunnel said:
Scroll down to examples on linked page. This implies huge variables in results. If I were to follow this train of thought, then logical to believe that grower A changes one thing in their grow and gets surprisingly different results from grower B, whilst both using same light and cuts.

UVR8 Chemical Profile Shaping in Cannabis — AgricUltra™ Advancements

The potency of high quality marijuana increases in direct ratio to the amount of UVB light it receives.
www.agricultra.com www.agricultra.com
Click to expand...
Yes, they discus the synergistic effects of the two. I've been saying they exist throughout a full spectrum & many have not been getting much of it by choosing to use plain white leds. And not considering why burples had a partial place. Combine the 2 along with small UVB +UVA along with n/uv,420,470, + up to 850nm should provide us with these synergistic results. At the bottom & the top of the Par ranges.
My spectrum should be out by the end of the summer. If not manufactured & produced for all then at lest ill be able to share my results, lab-tests,ect... vs our most popular leds.
Then growers & maybe manufacturers can at least know if a much lower efficiency, broad-spectrum, light can outperform a HE, popular light or not. Poeple wil be able to make more educated decisions on their choices of lighting.
Hence the next SBS coming up.
 
captainmorgan

captainmorgan

Well-Known Member
mr. childs said:
i think some years back @captainmorgan actually has validated tests, i could be wrong though...
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Yep, I used a trusted lab to test a cut that was already dialed in and I still have of GG#4. My research before hand said a 15% increase and the lab tests I got back showed a 15% increase so I say it's effective. I don't use UV in flower anymore but that's because all the strains I run are already plenty potent, some say too much so.
 
captainmorgan

captainmorgan

Well-Known Member
For those wondering how effective UV is for preventing PM, it's very effective. My grow area is a purpose built 3 room set up in a basement, lung,veg,flower areas. I share a house and the other person started growing in the same basement. Problem is they aren't very good at it and don't take advise easily so I just ignore the sideshow. They have been battling PM for over a year and won't take my advise, they have tents 10' away from my room. I have had two small infections from their PM factory in the last year that was easily cured. I gave up on fixing them and instead PM proofed my area, made tweaks to my set up several times. It's now been over 6 months since I've seen any PM in my garden despite the PM factory just outside it's door.
 
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end_of_the_tunnel

Well-Known Member
captainmorgan said:
For those wondering how effective UV is for preventing PM, it's very effective. My grow area is a purpose built 3 room set up in a basement, lung,veg,flower areas. I share a house and the other person started growing in the same basement. Problem is they aren't very good at it and don't take advise easily so I just ignore the sideshow. They have been battling PM for over a year and won't take my advise, they have tents 10' away from my room. I have had two small infections from their PM factory in the last year that was easily cured. I gave up on fixing them and instead PM proofed my area, made tweaks to my set up several times. It's now been over 6 months since I've seen any PM in my garden despite the PM factory just outside it's door.
Click to expand...
Thats really good to know and useful first hand information.
 
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end_of_the_tunnel

Well-Known Member
hybridway2 said:
Yes, they discus the synergistic effects of the two. I've been saying they exist throughout a full spectrum & many have not been getting much of it by choosing to use plain white leds. And not considering why burples had a partial place. Combine the 2 along with small UVB +UVA along with n/uv,420,470, + up to 850nm should provide us with these synergistic results. At the bottom & the top of the Par ranges.
My spectrum should be out by the end of the summer. If not manufactured & produced for all then at lest ill be able to share my results, lab-tests,ect... vs our most popular leds.
Then growers & maybe manufacturers can at least know if a much lower efficiency, broad-spectrum, light can outperform a HE, popular light or not. Poeple wil be able to make more educated decisions on their choices of lighting.
Hence the next SBS coming up.
Click to expand...
If adding to or improving spectrum offerings proves worthwile, then I guess eventually it will filter down to the budget end. Early bird, pays the price.

Still think basic white led plant lighting is here to stay. And its easy to experiment, and other wavelengths. But some people will want an all in one solution. Nothing wrong with either.
 
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