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Growing Plants With UV vs No UV Light & the Effects on Yield and Potency
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- čas přidán 15. 08. 2024
- Find out why UV light in your grow is the future to take your plants to the next level with potency and yield! We break down UV light for you and how to use it to master your crop.
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Chapters:
0:00 Intro
0:40 Basics Of UV Light
1:30 3 Parts Of UV Light
4:47 2 Most Beneficial UV Parts
6:44 UV Light Insight
7:44 UV Light Methods
9:32 What If I Don’t Use UV Light?
10:46 Recap
Break out your shades and drop a comment about your UV light experiences and strategies!
I use 2x15w 368nm uv bulbs from mid veg to harvest all the time on when my leds are ( In nature sun will not turn off time to time :D ), when i flip to flower i allso drop my temps to 20-23 and try to make it as dry as possible ( Not under 20% thats bad! ) I can promise if you gorw with this combo in good soil ( I use only biobizz lightmix and biobizz juices + ash ) you will get insanely sugary plants and potent af, tricome production goes thru the roof just in the first weeks of flowering.
Thanks for sharing!!
I run UV 12 hrs a day. For the full 12/12. If i run in veg i do 12 hrs. Terpene production starts in veg.
Oh wow, how does that work out for you?
It must not be very strong uv
I use Agromax pureVeg +UV - best seed to finish out there .. also use Agromax pureUV from 6 weeks to harvest... I have a CLW uvb lamp but found it lacking in size when compared to Agromax pureUV.... I also use a growmau led booster bar from rapidled with uva, 660 red & 730 far red.. these are just the supplemental lights I run with my regular full spectrum led lights... you have to feed them differently 😅 if not they can get burnt easily or throw deficiencies when running UV. We been doing this for 15 -20 yrs with solacure or tanning bed/reptile lights.. thankfully we have better options now. Digital timers ftw , ramp up in time on duration start low and work up to 15 min increments.. really gotta know your cultivars and what the lady's like. Led is only good for uva ... UVB is only effective in florescent form atm.. the led tech just isn't there yet.
That's awesome input, thanks!
Also I have to add UVA helps bring about a photo receptor repair type of beneficial effect.. Basically it tells your plant to grow tougher skin , kinda like hardening off.. the pigment can change in the leaves, extra uv protection & it will produce trichs as sunscreen. This is all jumbled, my apologies 🙏 but anyways, if you are going to run uvb then please run uva & shortwave blue along with it so as to have a better protective effect.. uvb is really really that powerful. There are of course different strengths of uvb bulbs and ways to run them as continuous or timed or pulsed is important as well. It is unbelievably easy to fry the photoreceptor or photon receptors on uv virgin leaves. Outside they are exposed to uv both uva & small uvb - some uvb lights have 3-6 times the amount so definitely ramp your girls up slowly.
Great channel man 🤘
I'm running the Migro UVB310.
Let's just say, for the Quality and cost.
Well worth the investment.
Thanks for the insight! I will have to check those out more
@@HappyHydro yeh man.. here's my mental analogy/ wet hand, dip in sugar 😁
👍
I have two tents, I conducted experiments with 4 varieties, that’s it! absolutely 1000%! those that were grown in a tent with uva are stronger in strength than their sisters without uva! if you give it to an ignorant person, he will prove that these are different varieties)! They always work for me! and yes, the yield is smaller! choose weight or strength! I forgot to add the most important factor! Keep the temperature 20-22 Celsius no more! this also gives strength! I only have a mini air conditioner for tents! I need cold! Ultraviolet light is needed! combination!
That's some awesome research!
Thats very cold for cannabis, most places were cannabis is native it rarely gets that cold in growing season @@HappyHydro
Very nice explantation now i also understand why the Migro support told me just to use it 2hrs a day for maximum 3 weeks in end of flower.
Great to hear!
In the current flower cycle I'm running UVA (365-420nm) for the 2nd, 6th, and 10th hrs of the 12 hour period starting in week 6. Seems to be doing ok, I've seen no damage that I can attribute to UVA. As for beneficial results, lab testing will tell the tale. I provide samples to a lab for testing potency & terps (P&T) after every run 😊👍
That sounds awesome and thanks for sharing! Seems like you're pretty honed in. I would be interested in those test results too!
I would recommend you throw the UVA LED in the rubbish bin and get UVB fluorescent. Use for an hour a day in the last 2-3 weeks of flower. pump up the secondary metabolites. up to that point you really only need to worry about the total ppfd your getting. UVA can likened to just adding more blue light to your spectrum which could be retarding your vegetative growth. Assuming you have good spectrum already. Thats my 2 cents anyhow.Happy gardening
How did the testing go?
You can run uva the whole time
@@iggy0978You know that he wasn't gonna write back? I mean, it's just a pet peeve of mine when I see somebody in a comment section or something or something about a item they bought. I'll come back in a few months and let you know what happened. Yeah, that never works.
Really well put together and informative video. Good job!
Glad you liked it!
So... if i were to distance my UV lights from the plants.. so i could on the UV lights for a longer period? Because of the wavelength reaching the plants seems lesser
I am no Bruce Bugbee, but yes. Traditionally adjusting the distance from your UV lights can let them stay on longer. It's all about balancing the intensity and duration. Keep an eye out for any signs of stress. Slow and steady on the adjustments and find the sweet spot!
Great information on uv! Thank you. Im introducing uv for the flower and already see the changes on the colas. Could be the genetics or the heat stresses from the wHaCk ass weather!! Seeing the results from "all of the above", I'm going to attempt to mimic those same conditions on the next run. Learning something new every day 🖖
Glad I could help! Happy growing and let me know how it goes!
I have been checking the terpenes for the past few days and today, I am harvesting! It's like the night before Christmas 😁. April 1st until 7-22 ..... awesome 😎. I want to thank you, all of the other growers who share the knowledge and experience with so many!! Now for the cure. 🖖 Peace my brother and thank you.
@@jimg5619 Heck yea my dude that is exciting!! I am very glad I could help. That is what I love about this community!
I’ve done several tests with uvb with cannabis plants in flower. Here’s my take away. LED uvb lights are not effective in our tests. Our best results was with using 2 4’ 80w fluorescent fixtures hooked onto bar style led (680w) lights with proper uvb bulbs. The lights were best at 24-28” from the canopy. Here’s where it counts. Only started giving uvb for 10-15mins at the beginning of week 5 of flower right in the middle of the light cycle. Then add 5 mins every week till harvest. We had no lose of productions but our thc and terps shot up 25-30%. I.e thc would be 20% without and 24-26% with uvb. Drawback..cost for fixtures and proper bulbs are pricey. Really pricey. However, in a commercial environment, it gives a great edge.
Hey that's some awesome research!
@@HappyHydro took a couple of years in a commercial environment to figure it out. Was a trying process but worth it. Great video btw
@@patrickgagne8795 Thanks Patrick, I appreciate that
10-15 mins seems low. Advice from Bruce Bugbee is 1.5 hours, add 30 mins each light cycle until leaf burn, then reduce the time by 30 mins.
@@Tara-Maya I had stunted growth doing that schedule
My tomatoes will thank you 👀
Always an interesting topic! Thanks for covering this :)
Thanks for watching!
I use one with ir uv together from spider farmer I noticed that they don't make them anymore now they are on their own
UV + Co2 = 😍
So true!
Is that the same as UVA?
@@406.dabber8 Is what the same?
According to Dr. Bruce Bugbee at Utah State University....UV has been shown in lab experiments to NOT INCREASE POTENCY......So currently there is no evidence to suggest that it does. If you have some evidence here, please do post it.
I grew one year with led light that have no UV.
The harvest is good with good structure but when dried the buds are light with no sent and trichromes are little. Just added UVA to see if it changes.
Let me know how it goes!
We have the same problem, airy buds are mostly bcause of high temps. I will suggest to use exhale bags in your growroom, they will get the temp little bit lower (use at least two big bags), also your plants will be able to absorb more light, and there will be no popcorns, just solid buds top to bottom. I recommend start the bags ASAP as you get them, they need 2-3 week to start producing co2 and last about 6months from what I read. Hope this helps :)
@@MatoooshThats awesome input!
@@HappyHydro thank you, I find also your content very informative with lots of value. Iam probably 15yrs into learning all possibble about cannabis, biochemistry and grow related topics.
Iam starting soon consulting company in Europe, since we are getting close towards legalization.
@@Matooosh Thats awesome to hear! Its always great to have a wide community of passionate people who want to help others.
🤔Found this very informative. You have any recommendations on brand of
u v a or u v b lights? Where to get them home depot amazon reptile store? How much wattage per square foot? Thank you.
You can click right on the links in the description to find some pretty popular UV lights. If you have any more questions, email us at help@happyhydro.com and we can help you!
Get some PIZHLO 385nm LED strips and stick them around the edges of your main grow light or around the perimeter of your grow area. It may not have the same effect as pulsed UVB, but its alot safer, cheap, and an easy way to give your light spectrum more variety. The remote that comes with it allows you to dim or cycle it.
What's safer about it?
@@P_Treeuva is much less aggressive radiation than uvb but that is also the reason uva does nothing for cannabis growers except keep your plants short.. So no don't put uva LEDs in your tent, that's just a waste of money
Good one and I learned a lot!.
Thanks Joe!
How often does the sun turn the UV down during daytime? Does it cycle off and on like your suggestion? Shouldn't the concept be too recreate the same light as sunlight? Far and IR red run all day long too. The difference between a plant under sunlight and one under an led spectrum is significant so I'm sure the light mfg are missing out on some parts of the spectrum recipe for sure.
The sun is unrelenting! But sometimes clouds, atmosphere, and structures get in the way and help shield the plants from some of the more harmful rays. Yeah, the sun is tough to recreate in a light, but scientists are always trying.
Sure go ahead and create your sun like spectrum with 70% IR
Is this Nakey Jakey"s grow channel?
ooh its an enticing name but it is not lol
The last ten days flower turn on 10 mins before you normally would turn your reg light off. But only have the uvb on
Can we use a lizard light if we are broke AF?
I mean you could, I'm not positive on the effectiveness.
@@HappyHydrowhy? It produces quite a lot of UVA and UVB
Can I use a black light? Like the Barrina Black Lights?
I don’t think so but not positive
While everything I have heard on here is accurate with all current studies you did leave out that while increasing terps and oils it can decrease over all bio mass. Meaning lower total yield. Pros and cons. Not just pros
So if you grow plants for buds it would be more interesting without...but I would love to know how much you lose! But if it is for hash rosin or any concentrate it should be better...but is trichomes size compensate the lower yield?
Do you have a clue how much you loose on final dry weight? Is it a lot? Same for the trichomes size...do we have an idea of the difference in size? Not something many tried...!
Have a lifted one and lots of good vibes from France growers family
There is a fine line between proper uv supplementation & over doing it. If you do it wrong , yes it will hurt yields.. if you do it correctly it does not.
Thank you for contributing. I’m still learning as well!
Great content 😮
Thanks!
So is UV to be ran with or without the main grow lights on?
You can run them at the same time!
You might want to do some more homework on just regular lighting before you jump in the u. V if that's your questiand it's with
@P_Tree sorry that people ask questions while they are learning. But thanks for your douchebag response!
Did uv light work on all plants?
I'm not sure of the effects on other plants
watch out, there's someone in a black ski mask standing right behind you
whoa thanks
Will it put my plants into flower?
Typically you would have to reduce your lighting from 18-24hrs to 12hrs to put your plants into flower - the UV light shouldn’t effect it.
@HappyHydro Thank you. I know stress can trigger flowering, so I thought I'd make sure so I didn't ruin what I have
More interested in preventing mold than increasing secondary metabolites. We’re all swimming in secondary metabolites anyway these days. 😂
What about mushies
Going to have to do some research on that one!
Mushie grow in the dark perfectly fine they do not photosynthesize. UV might increase vitamin D synthesis though
You spelled thicker like a Crip lol
haha thanks
UVA - Alright
UVB - Bad
UVC - Cancer
look into reptile uv lights way cheaper
they are pretty weak
@@eggspanda2475 Yeah but i have run them works as well but no hassle ran one same hours as my reglar light.
@@zcalex7660 if it works it works I guess. from what ive read though the good uvb bulbs produce a lot more than reptile lights which only create about 10% uvb light so would be good to see some experiments and comparison. for me though $129 (migro)fixture that puts out high levels of uvb is absolutely worth it
Not strong enough to be useful. Only good for reptiles not plants
@@eggspanda2475they are not weak.. They can have up to 18% uvb.. Which ones have more?
420 likes 🤭
Just skip all this nonsense and start growing outside 🤣
I always start my girls indoors in the spring then transition them outdoors once the nights start getting warmer.
Outdoor weed totally blows. Indoor grows are always better
@@SilentScreamsStudios what??? 🤣🤣🤣 You just don’t know good growers or have low skills, or live in an area that has poor growing environments. My outdoor is always better than my indoor. And I get twice the amount off one plant than I would an entire 4x4 tent. Speak for yourself, because there’s a ton of growers outdoors that produce amazing bud!
@@hehawkiller I live in NY and it blows to grow outdoors unless you have good weather. This year was not great, cooler temps and tooooooo much rain my man. Bro i have an ac infinity 5 x 5 and a 2 x 4 with all the bells and whistles in my grow room. Whole room dehumidifier, humidier, and AC all automated. I built a sweet netafim auto watering system but don't use it much, I like hand watering lol. I am building an 8 x 15 grow room with a 8 x 5 veg and/or dry room. Can't wait.
@@SilentScreamsStudios I live in a decent area, so I can do outdoors. I do have an indoor as well that’s all connected to the bells and whistles also, just went VIVOSUN instead since they had a wifi hub and AC didn’t at the time. I have dedicated veg room, dedicated flowering room and a controlled room for drying. Been doing this just over 30 years now.
Good luck with your future grows.
@@hehawkiller I run a medic grow smart 8 which are damn killer for the money, then I have a vipraspectra p1500, p2000, and a parfect 360 cob light like those optic led lights. Yup my AC Infinity controller 69 basically is like the mars hydro smart hub. What light for a 5 x 5 do you think is totally killer??? Thanks