How to use UVB lighting

[kenney]

I want to use UVB lighting because I've heard some good things about it. Does anyone know what type or model I should try. Also the wattage, how far above the canopy should the lights be. Should they be used throughout the grow cycle or just during flower? Can anyone offer some advice? Thanks.

 

[BryanOconner]

safety eye wear or burn your eyes 100 % .
Second late flower week or so before harvest only time i see a benefit .
And more on the topic . Ultra violet bulb. Put it near your fan. This will kill all mold spores and germs .
I have them inside my air duct . When the furnace fan kicks on the bulb kicks on .
edit . Air planes could easily put these lights into there vent system to kill all germs . Its so cheap to set up i think under 100 bucks per plane . They wont do it let the flu colds spread.

 

[JKash]

safety eye wear or burn your eyes 100 % .
Second late flower week or so before harvest only time i see a benefit .
And more on the topic . Ultra violet bulb. Put it near your fan. This will kill all mold spores and germs .
I have them inside my air duct . When the furnace fan kicks on the bulb kicks on .
edit . Air planes could easily put these lights into there vent system to kill all germs . Its so cheap to set up i think under 100 bucks per plane . They wont do it let the flu colds spread.

How long do you leave your uv light on for... couple hours... 6 hours???

 

[JKash]

I just got new phlizon uv/ir... been hearing different ways to use uvb...

Tbh don't even know if mine is uvb... but still interested in actual usage timing

 

[ACSippi]

You gotta be super careful with UVb as it will fry your eyes and plants. I ran mine for 15 minutes at a time a couple times a day about 5 feet above the plants during the first few weeks of flower. One day I forgot and left it on for 4ish hours and youd think I fed my plants straight fertilizer for a week, everything was burnt to a crisp.

The risk isn't worth the reward imho. Plants that didn't get burned just looked normal. I couldn't tell if there was a boost in tricromes or not. BUT I want to add my CMH adds UVb so that's conflicting. Maybe if the CMH didn't already add UVb I'd see a difference?

UVc is what you put in your ducts. The bulb should ALWAYS be protected and shielded from eyes, that's why they're always hidden. Everyone should rock a UVc in their grow room. I use a GermGuardian.

 

[kenney]

How long do you leave your uv light on for... couple hours...

You gotta be super careful with UVb as it will fry your eyes and plants. I ran mine for 15 minutes at a time a couple times a day about 5 feet above the plants during the first few weeks of flower. One day I forgot and left it on for 4ish hours and youd think I fed my plants straight fertilizer for a week, everything was burnt to a crisp.

The risk isn't worth the reward imho. Plants that didn't get burned just looked normal. I couldn't tell if there was a boost in tricromes or not. BUT I want to add my CMH adds UVb so that's conflicting. Maybe if the CMH didn't already add UVb I'd see a difference?

UVc is what you put in your ducts. The bulb should ALWAYS be protected and shielded from eyes, that's why they're always hidden. Everyone should rock a UVc in their grow room. I use a GermGuardian.

Thanks I'll be careful.

 

[JKash]

You gotta be super careful with UVb as it will fry your eyes and plants. I ran mine for 15 minutes at a time a couple times a day about 5 feet above the plants during the first few weeks of flower. One day I forgot and left it on for 4ish hours and youd think I fed my plants straight fertilizer for a week, everything was burnt to a crisp.

The risk isn't worth the reward imho. Plants that didn't get burned just looked normal. I couldn't tell if there was a boost in tricromes or not. BUT I want to add my CMH adds UVb so that's conflicting. Maybe if the CMH didn't already add UVb I'd see a difference?

UVc is what you put in your ducts. The bulb should ALWAYS be protected and shielded from eyes, that's why they're always hidden. Everyone should rock a UVc in their grow room. I use a GermGuardian.

I've been interested in uv for environmental control over plant production... Im in a basement... 1 tent 1 non tent... so this is right up my alley

 

[ACSippi]

Kash you've mentioned that and I remembered, your on point!
Use UV to protect your enviroment > more tricromes. If you get more trichs then thats a bonus! Imho of course.

I dont mention it, its always been one of my little secrets, UVc in a grow room almost eliminates the chance for Powdery Mildew. Jeez I'm spilling secrets like crazy these days...

 

[quirk]

I hit the button at week 4 of flower and it stays on 20/24 until harvest. But I grow autos.

 

[BryanOconner]

So i read a 10 million page report about uv .
i can find it paste it on here for you to read studies of boring material on and on and on this and that . I can just tell you what uv does .
It forces the what i call alien eggs to get stronger . Stresses them. They say SHIT this light sucks ! And they grow stronger .
Will it increase thc ? Yes it will Slightly more test are needed the study says How much stronger ? min amount less then .05 so the study i read said . Again its a 5 year old study.
Will it increase the amount the alien eggs no . The plant will only produce what it wants .
My advice is forget the uvb .
Get some silicone additive for your plants this is better for trichomes .

How To Use Silica To Grow Healthier Cannabis Plants - RQS Blog

Give your weed plants silica to boost photosynthesis, increase cell wall strength, and protect them from pests and disease. Beneficial for both soil and hydro!

www.royalqueenseeds.com

Silicon in cannabis cultivation

Silicon is a curious element: although it is not essential for the development of plants, its presence in plant nutrition boosts a series of interesting aspects, very important for any grower to take into account as they have great advantages. In today's article, we explain everything you need...

www.alchimiaweb.com

 

[GNick55]

Busting common myths about cannabis and UV

 

[StalkerAF]

I use a hlg uv bar and supplement with it 4 times a day 1-2 hours at a time during veg and 2-3 hours per time in flower. I mainly do this in hope of the light actually helping the environment and possibly the plant some.

 

[ACSippi]

Busting common myths about cannabis and UV

Super great post Nick! With him being an expert and me just a regular dude I agree with everything that guy said (but who am i compards to him lol). He also  confirmed my suspitions about LEDs. Now i can be confident when i let people know to doubt LEDs UV.

I never knew people in the industry use supplement UVb commonly till now, i always kept it secret because those guys brouse these sites learning how to grow as they claim theyre 'masters' to customers. But I guess, over time knowledge spreads. Nick's post made my balls grow, maybe I should bookmark it for my next UV debate lol. Imho that link is all that needs to be posted when talking about UV.

But yeah, supplemental UVb shuts down Powdery Mildew, I helped a guy like the man in that post mentioned...big timer OG, cured his PM problems and the mofo didnt even give me a shout out. UVb/UVc is the truth! But beware because you will toast your plants so UVc may be a better choice if you dont want to mess with UV supplements. UVc is shielded for safety and can be used as an air scrubber circulating air in your room, like a germ guardian unit. Set it and forget it.

As for THC, the risk isn't worth the reward imho but if you can incorporate it into your grow properly (unlike me) then why not?

The  only reason I don't use my UVb is because I don't want to use a digital timer, I despise them to the max. But after reading that I might just give in.

 

[ACSippi]

The plant will only produce what it wants .
Get some silicone additive for your plants this is better for trichomes .

Good point, that's what we've always been told forever. A plant can only do so much. (PGRs enter the chat and giggles)

I don't use Si but I have tinkered. Si is a mystery to me and I've never been able to read anything concrete other than the benefits to plants. My concern is human health but have never found anything to settle my concerns so I stopped using Si. My concern is if it's associated with PGRs. I can find  nothing on that topic. Afaik silicone is bad to your lungs when combusted, that's all I know. Does Si carry the same concern?

 

[BryanOconner]

Good point, that's what we've always been told forever. A plant can only do so much. (PGRs enter the chat and giggles)

I don't use Si but I have tinkered. Si is a mystery to me and I've never been able to read anything concrete other than the benefits to plants. My concern is human health but have never found anything to settle my concerns so I stopped using Si. My concern is if it's associated with PGRs. I can find  nothing on that topic. Afaik silicone is bad to your lungs when combusted, that's all I know. Does Si carry the same concern?

I agree with you . Even those chemical nutrients could cause cancer correct ? Farmers use them in there fields . There not organic . Trust me i know big farmers that grow corn pumpkins and squash so on. I looked at the big ass bags . Make darn sure i run water for the last month before harvest for sure . A lot of those pest sprays are also nasty . In the winter All the veggies even apples from the store will have a coating on them sprayed on them. Pest sprays all mexican imported no regulations . FDA approved lol total joke . Other countries would not allow mexico to ship food in . More of a babble to being helpful
I am retired dispo owner we used to have legal 1500 plants . We did uv honestly noticed zero difference . Again we would run 10 k bulbs above them a week before harvest . Saved a lot on the e bill and seemed to bring out more sugar . Quite a bit more . But it would not test stronger then plants that never had the 10k on top for thc. But for sure looked better .
Dispo are jokes today . They have total garbage . They vacuum it so its tight . Tumble it to death . Pore the kith on the top of the bud . Say its 35 % BS.
i have use uv tested noticed zero difference . All gardens are different . 10 bulbs had some it them.
Edited 10 k bulbs can be also called uv bulbs .

 

[Putthataway]

I agree with you . Even those chemical nutrients could cause cancer correct ? Farmers use them in there fields . There not organic . Trust me i know big farmers that grow corn pumpkins and squash so on. I looked at the big ass bags . Make darn sure i run water for the last month before harvest for sure . A lot of those pest sprays are also nasty . In the winter All the veggies even apples from the store will have a coating on them sprayed on them. Pest sprays all mexican imported no regulations . FDA approved lol total joke . Other countries would not allow mexico to ship food in . More of a babble to being helpful

You aren’t babbling at least I am listening. Not to mention the insecticides you are neglecting the workers shiting on the crops and every crop gets let in then people get sick from diseases that come from human shit.

 

[HollywoodBigBud]

I've been interested in uv for environmental control over plant production... Im in a basement... 1 tent 1 non tent... so this is right up my alley

I'm in a basement with a couple in a tent and 1 not in a tent also just put tent in the room tonight

 

[ACSippi]

BryanOconner We are homies! I can rant all day about businesses, poisons, pgrs, scammers, etc. When businesses can lobby government to allow poisons because they don't know how to grow without them then that should tell customers something but they don't care. Customers are good with the guys who are poisoning them when they say 'it's safe! We only use safe stuff!'

As far as Chem ferts I've never been able to find anything negative about General Hydroponics. I promise I search from time to time, I'm always reading about weed, it's my life, so I've looked everywhere through the decades.

The thing that bothers me is guys like Kushman who died young from COPD. He didn't care about applying anything to plants to protect them. I feel it cost him his life.

For the past 10 years or so I always thought of myself as the guinea pig for GH nutrients. I've been using them since the early 90s. Absolutly nothing else. No cancer or copd here and I'm 50 looking like I'm 35. Who knows tho, my testing of GH is still ongoing...

 

[ACSippi]

chemical nutrients could cause cancer correct ? There not organic .

Well according to GH, who supplies NASA, their products are 'beyond organic.' But the word 'organic' is a government word. It's confusing but from my understanding the government owns that title. Weed grown traditionally, organically, can't legally claim to be organic. Only the government can bestow that title from my understanding.

 

[BryanOconner]

Well according to GH, who supplies NASA, their products are 'beyond organic.' But the word 'organic' is a government word. It's confusing but from my understanding the government owns that title. Weed grown traditionally, organically, can't legally claim to be organic. Only the government can bestow that title from my understanding.

A person could make a compost pile old veggies so on . Its 100 percent organic . The gove would say that is unsafe soil to use for food or smoke . They would recall it . Here use some of this .Not to worry it only has trace amount of cancer agents in it all safe .
There has to be a reason why cancer is starting to get much worse then ever. The sun ozone layer being really bad could have some to do with it . Lot of RF radiation leaking through .
Over a 30 or so year time eating a material its not longer trace amounts .
IDK Man all i can say all of the plants we grown i guarantee they were 100 percent safe .