How does UV light affect plant growth? feat Dr Bruce Bugbee and Prof Erik Runkle
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- Опубліковано 23 лют 2021
- Why use UV in the grow room? Read more here: migrolight.com/blogs/grow-lig...
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I run through the affect of UV light on plant development including the science behind the use of UVB to increase terpene production which improves the smell and flavour of herbs. I share extracts from interviews with:
Dr Bruce Bugbee, bio. here: www.apogeeinstruments.com/our...
Professor Erik Runkle, bio. here: www.canr.msu.edu/people/dr_er...
and Andrew from Bridge Farms in the UK, link here: www.bridgefarmgroup.co.uk/
Bruce Bugbees latest video on UV lighting for plants:
• How Ultraviolet Radiat...
Some interesting research on the affects of UVB on plant development including Cannabis here:
silassativariusdotorg2.files....
lcb.wa.gov/publications/Marij...
www.karger.com/Article/Pdf/48...
citeseerx.ist.psu.edu/viewdoc/...
Some helpful videos on Terpenes and Cannabinoids:
• Video
• Terpenes in Marijuana ...
• Cannabinoids and Terpenes
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Could you please test out the new lumatek uva-uvb lights.big lumatek fan.
YOU AND BRUCE SHOULD PARTNER UP ON A COLASAL 500 WATT INDOOR FIXTURE THE PINICALE OF FINE ADJUSTMENT WITH UVC SET TO GO ON 2 SECOND TWICE A DAY
@@foofooblenda734ufc for what, ufc dosent Effect on mj -.-
Yes! Finally there is legit UVB research, mannnn. I love this, ive tried to get more people to use Arcadia little knockoff reptile bulb, and now we get legit science into UVB and hemp etc. You all rock, I love it. Thank you so much MiGro and Bruce at Apogee Instruments. This is next level UVB researched ive begged for years
I hope you get this. I was wondering whether u can use the lizard lights.
@@reefonbux9432 Many of the Flourescent UVA/UVB lamps used for supplemental growing effects are Reptile lamps.
If using Reptile lamps only, IDT any plants could grow? I mention this because many people over the years have mentioned using "Black lights" only, when speaking about growing indoors.
IDK where this Myth started? Maybe older movies, or something in pop culture..?
I believe Shane has a video comparing different Reptile lamps and their spectrums, on The Migro Channel.
@@timturk1899 no, I'm not talking about using them for veg at all. Specifically last month of bloom as a sup light.
@@reefonbux9432 Thats what I'm thinking about trying at some point
I use the arcadia uvb flourescent bulbs , started back in 2018 .
I use the high uvb bulbs for desert reptiles .
Guidance on using the MIGRO UVB and ARAY together:
The surface area of the ARAY is about 20% of the surface area of the canopy it covers. This means if the UVB is above the ARAY 80% of the UVB photos will reach the canopy. Also the UVB fixture is 2ft or 60cm long so UVB photons from some part of the fixture will pass the ARAY led bars at different angles to reach all parts of the canopy.
The hanging height of the UVB is 2ft or 60cm, way above the the ARAY hanging height of 6 to 8 inches or 16cm-18cm minimum. UVB photons will fade the colour pigment of the ARAY over time but will not cause much bleaching as it is only used for around 30 hours total per growing cycle. It would be the same fading as leaving the fixture in mid-day sun for about 10 hours.
Would you still recommend 2hour per day for the last 2 week?
Why UV-B and not UV-A, according to bruce bugbee UV-B burns the plants just turning it on 1 or few hours a day!
What’s not discussed is an exact method for administering the UVB supplementation for tangible results..pretty much, here’s your UV bar, go to town…i have used UV before and I am not swayed…we need to know exactly how to administer the UV..
@@lucianthepurifier___412 He said LED s can produce UVA effectively but is much less powerful to the plant. LED dont produce UVB economically. 1 photon from UVB is 100 times more powerful than UVA. UVC is much more damaging than UVB. Glass filters out UVB. Some UVB is good for people in the right amount. Some UVB is good for plants, in the right amount.
i know im asking randomly but does any of you know of a way to log back into an instagram account??
I somehow lost my login password. I would appreciate any assistance you can offer me!
Hello from Elusive Strains USA - We have followed your channel for some time and wanted to give a big thank you for giving the community accurate information. We have used UVB for many years as it does indeed have a positive affect not only for flower but for the health of our seeds.
Hello! So how do you use it? When, and how much?
I would love to know more!
Yeah how do you use it? 🤜😐
@@MrRiverGrove Last 3 weeks of flower, have the UVB fixture come on for 2 hours (might get away with 3 hours) in the middle of your light cycle WITH your light cycle. So if you are on a traditional 12 on/12 off, you would want to just have your regular light come on for 5 hours like normal, then have another timer bring your UV fixture on for its two hours, have it shut off, and have and have the remaining 5 hours be just your normal lighting LED, HPS, etc. We want to act like the UVB is running when the sun would be at its highest point/most intense during your relative light cycle.
Hope this helps
don't suppose you guys would have any info on the effect on insect pests and resistance to pests and moulds.
Thanks Shane, I have your lamp on its way!! Love everything you do!! Peace and love from 🇨🇦!
Glad to have you making videos again Shane as always good video good information have a good one God bless.
This has been known for a very long time and was found when kush was first taken from India from the hindu kush mountains as it grew with very high UV in the altitude of where it was first discovered and works best with kush variants of cannabis the plant developed more oils and thc as a uv defense
That really makes sense because the higher the altitude the more UVB and UVA hit the plant 🌱
you think it 'helps' for pure sativas (e.g. malawi, thai, Jamaican, Panama...) aswell?
@@slurpyterpy447 if it's in its dna it will work sativas come from arawnd China a long time ago but have been grown just about everywhere at some point in time. so if it has picked up that mutation it will work . the stubilaty of the genetics will make a difference to as two seeds from the same plant some time hold different mutations from parent plant ... if you get wot I'm saying
@@slurpyterpy447 In theory it should help all plants regardless of genetics and strains, because outdoors they all get UV. It's just that some will benefit more, and some will benefit less.
True story
Kush loves uv and far red
2 hour's a day from the 2nd week of flowering and sit back and watch the magical lighting do its thing
People who don't use them are missing out big time
The smell. Taste. Resins the full body is transformed
Ive been using uva and b in my flower tent for a few grows now and the colours i see when the fade comes on is especially notable. the flavors have been great as well! the note on dating a day off between the uvb treatments is a neat thing I am going to add to my schedule. cheers!
Been running uv & IR for about 7years…..undoubtedly more resin more colors and flavors, it has come built into Kind lights for years and it’s adjustable, I just use it during flower! I fall on the floor laughing every time someone with a mars says I’m overpaying for my kind Led! Been trying to explain for years that I’m buying the spectrum
Awesome! Thank you for all the great information
thank you for your hard work bud
Awww yeah, Dr.Bugbee is the man for sure! Great video, can't wait to see what the future brings with the new UVB technology being implemented and put to use.
Agree'd. Currently I am growing peppers Chinese basil and a sativa/indica. Using a reptile bulb pulsed for an hour or so a day. Definitely getting some cool purples
ANOTHER GREAT VID. Thanks Shane
I have several runs with your UV-B fixture now n can say that it does make a huge difference in my grows. 1st off the MIGRO bulb seems much brighter next to a Solarcure fixture. 2nd, the plants respond to the UV with lots of trichomes n colors. I run 1.5 hours a day through all of flower. At harvest we often see that the colas n leaves exposed to the UV show the colors while the bottom branches do not. Thnx for the videos and the awesome lights. I have my 1st array4 on the way and can't wait to hang it.
Great info. Keep up the awesome work!
Thank you once again
What a benefit you are to us
Thanks Shane, informative as always.
good stuff shane well done
Thanks for the Video with nice facts driven charts, experts oponions and all the good stuff ;)
Day 8 of running them and very big difference, just 2hrs a day. Using your recommendation, thanks Shane.
the florescent ones or led?
Extremely useful video, thank you! I almost got a migro light when I upgraded but I had to go with something else just for budgeting reasons.. I do plan on getting that UVB light though!
Keep up the good work
Love the scientific approach of the channel.
Thanks.
Great talk. Cheers from New Zealand.
Nice to hear from the southern hempisphere!
Always learning.... really enjoy your hard work and quality of products. I used my (2) 310 UVB last two weeks. I saw the difference after one day! It Made a very pretty shield to protect that reproductive system. Very exciting....!
Good as always and very informative. Im using it in my new setup to test the fruiting capsaicin. I upload it in some days!
I really appreciate all of the information you share. I wish your products were available in the US, but regardless thank you for the efforts you put in to these videos.
I just bought IR and UV light bars from Marsh hydro I'm very excited to see how they work ✌
3 thumbs down in the first minute of the upload. Lots of jealous people around... thumbs up 👍
I was gonna say the same thing lol.
Exactly!
LOL. I am so happy this UVB talk is getting big now, ive talked about it for years on Hash Church and icmag, and all the UVB cannabis videos (the couple that are around ha)
@@dertythegrower I seen Shane's vid a year ago with the Herb and Spice Guy and was Interested Then. He played a clip of it in this vid.
@@dertythegrower
No doubt, I have been playing with uva and uvb combos off and on for decades! .Is anyone out there using a 20:1 ratio uva to uvb ? I was told this is close to the natural sun spectrum .?
My thoughts are to dial in the origin of the strain and then replicate that spectrum from where it comes from....just throwing some ideas out there ..All my theories and conclusions have been from 25 years of R&D..trial and error.
This is why greenhouse produce lacks as much flavor as under the sun,
One part of this trigger process is Brix levels shoot up fast! As well as cooler temps ..Did a bunch of side by sides not even close!
I would assume sometimes at least they are pressed by accident. I’ve hit the dislike button so many times on my iPhone without realising. It doesn’t notify you like it does when u like something so often you just don’t notice you disliked it.
great stuff. thank you.
Thank you for sharing such valuable information with the world 👍 Keep up the good work 😎🤙
I really like your channel keep up the good work
Very interesting information thanks bud
Ty. I’ve actually heard before it had no real effect. This is great info. Keep it up!
Thanks Shane!! Awesome information and a legit light!! 🙏✌️💚💨💨🤙
I’ve been testing uvb (fluorescent) seen moving away from cmh to LEDs and this video is spot on.
Cheers Shane! I have a Solarcure UVB but looking at it comparison to the Migro setup I’ll be ordering a couple soon.
Beautiful brother ❤ coming up on second harvest. :)
Awesome video
No doubt. Highly interesting.
Great info
he said he was no expert and they are still on a learning journey thats what we need less ego and we all can keep learning
Good video man.
This is a awesome video. I cannot wait to try something similar to this with tomato plants and such. Super curious to see how it will work out
Very interesting!! Can't wait to see more research on this. Would love to see some more research on sound waves and the benifits
Bose did research on this in grapes.
They found out playing Bose speakers with classical music increased growth and increased sugar/brix in the plants, results were better flavor in wine produced at the vineyard with Bose Speakers. This is also proven in the Library of Medicine, plants with a certain vibration literally grow to the vibrations of certain hertz frequency. This is found in the tax payer funded Library of medicine pubmed search page, in many studies. Next level stuff, for sure
Also it reduced pests in the garden.. a double whammy to use this idea...
Look below for the story
"The network of speakers that delight Paradiso di Frassina’s vineyards 24 hours a day with the complex and lively harmonies of Mozart also allow the winery to reduce vineyard treatments, so no chemicals are used to protect the vines. Stefano Mancuso, a plant neurobiologist with the University of Florence who gave a talk on the roots of plant intelligence on Ted, has been studying the Mozart vineyard since 2003 and has found that sound dramatically reduces the number of attacks from insects and parasites who remain confused and unable to locate one another for mating. Birds and other animals who like to feed on the grapes also stay away, so there’s no need for the use of pesticides!
The company Bose heard about these studies, donated 72 speakers and financed more research."
I’ve been meaning to get a couple radios In my tents for a few years now. Jus keep forgetting an being lazy but I’m gonna try it this time. Classical fm ftw
@@dertythegrower I have some speakers in my tent. I play a specific hz when feeding the plants and they love it!! I
Could you please let us know more about it? It's very interesting.
I received the MIGRO UV-fixture during the flowering period. It is difficult to say how the effects are, but it definitely didn't hurt the plants. They turned white all over, and I will definitely try it again.
Do I run the UV lights same time led lights are on? Or 2 hrs when lights go off??
@@scarcorleon I use the UV lights with the timer set to start around the middle of the "daylight" time. With auto flowering plants I avoid having it on during outside daytime hours to avoid any extra heat as the climate where I live is very warm. This offset from the middle of their daylight time has shown no difference to the flowering plants, as far as I can judge.
Just got an Agromax 2ft T5 Pure UV bulb. For the first time in over 3 years I'm excited and happy about a purchase.
I got 4, just started them up 8 days ago for 2hrs a day and the trichome production is off the charts, also seems like the leaves started filling in possibly as protection as well, which I've never seen at day 55 of flower, This is already into fade, so leaf growth is unusual.
how high do you keep them?
@@BigFarm_ah365 how did it workout?
Do I run the UV lights same time led lights are on? Or 2 hrs when lights go off??
Ive been wanting to try it on my cannabis grow for a long time
I like that video. My plants have had good soil mixed up, ph 6-6.5, 4 different and tried different led fixtures but the terpene profiles really suck. I'm going to try an uvb light and hope it's better
Hey Shane, I ordered one just to support you and to give it a try. What you say sounds good, but I only believe what I can replicate in my own garden. Will report findings.
So, any updates?
We need to leave this subject sit until we can wait for technology to catch up were still in the very early stages!
Enjoyed this video thanks mygro
UV technology is already out there and many people use it in their grow.. It's just that LED UV are still not there yet.. If you don't use UV, you're missing out.. If you use MH/HID/HPS then you have UV already
this is great
Got my 310 two weeks early!! I mean... Wow
This addition brings a luggage full of awesomeness.
Thanks Migro 🤘
Enjoy!
thanks for this .. i have UV tube & will try it out
Running both a MIGRO 310UVB and a California Lightworks UVB in my 5x5 for 90min last 2 weeks
Every other day? (As the video suggests)
Awesome information in this video Shane! My favorite part was the shower scene at 9:00, really hot stuff!
show shane our appreciation buy migro
I have 2 lights lol and use them every grow
the man has gone above and beyond for free you never see that with truth what ever it is thanks Shane ...🇺🇲
As far as I know the best, high output ~280nm UV LEDs are now about 8% efficient (up to 1,5W, 6,5V / 230mA). Still far away from ordinary LEDs but getting better year by year.
My main problem with the ones I know about (in addition to the price) is their extreme sensitivity to heat / short lifetime. Already at Tj 45°C they loose 30% of their output in 3000h-4000h.
And at Tj 55°C they loose that 30% in 1000h-2000h.
So you need very good heatsinking to get reasonable lifetime from them. When driven at 1W with ~26°C heatsink Tj 35°C looks possible. This might result more acceptable ~8000h lifetime.
Currently testing lower energy UV-C, 200nm-230nm @ 3ms-8ms exposure Per Hr (1.5w SqFt)
Also...Discovered utilizing a 20 minute 10k led pre light, as a Phototropism lure, increases amount received .
Time will tell...
glass reduces the amount of UVB/A that reaches the canopy in a greenhouse or through a window when growing at home. UV exposure at safe amounts (for your plant products) encourages the plants to develop stress responses. Those stress responses can and often improve taste/colour for meals and even resale; as for Cannabis, does UV exposure create a greater concentration of trichomes due to this stress response? The 'increased potency' referring to the greater number of trichomes is where I'm thinking this product improves yield. I purchased the UV310 light from your store in late 2020 and can say it improves our food growth with taste/resins and the colours are more vibrant than with no UV supplementation.
Exellent work, as always.
Is there a reason why the old-school flouresent tubes from a solarium whod not work ? Cheers n please stay safe.
Great, i know very litle about uvb
STAY OUT'A DA 🌞 "FUKR" .
HA HA HA HA !
I’m looking for some research specifically on implementing it as additional supplemental lighting in my grow room because my grow room is growing so much with a abundance of different types of plants no longer just tomatoes as we call them 😂
Always something to learn. With UBA and skin aging and wrinkles, or UVB and skin cancer, I would definitely wear eye protection and keep those inside a grow tent. Funny how plants react.
don't be a big girl
I apply it like a sunrise and sunset for the last few weeks
It definitely did wonders with my girls.
Can you please do a review of California Lightworks Solarsystem UVB?
Hi shane thank you for an awesome video as always 👏👏 one question I have about uvb diodes like the ones we find in the marshydro and argox ect, are they just for show or do they work ? As you explained florescent are more effective if not the real deal compared to the diodes, would really love to know about it as been building an led light and wandering if it's worth the uvb diodes, thank u in Advance
Hey can you do a review on Luxx lighting LED?
No one that I have heard has mentioned the Cirrus UVB light bar that was given an award by High Times in 2016. I just bought 2 of them.
What brand and where did you get them
@@hectorcalderon3011 Cirrus they are based in Portsmouth NH. They changed company focus to high definition digital commercial displays. These were new old stock.
I like the set up with the red light, kind of like a bar. You should pour yourself one for the videos!!
I use the Agromax Pure UVB T5 bulbs. Been working great for years.
People have been using the reptile UVB bulbs for years, that brand and Arcadia. But now, MiGro is taking over the game apparently for us growers. Awesome!!!
i have a bunch of t5 ho fixtures i could maybe get UVB bulbs for. how far away from the canopy do you hang them?
@@professor4202 start out about 36 inches. It dosen't take much. Ive got 2 two foot T5s in a 5×5.
@@dertythegrower yes sir.
The only problem with the reptile UV t5s tho is the UV-B emitted is max bout 10%.
The Agromax Pure UVB T5 is 80% UV-B and 20% UV-A.
Migros is pretty close to the Agromax. Just Migros is a T8 fixture tho.
@@timpage5021 Personally i would prefer the weaker reptile bulbs so i can hang them lower, or from the sides. With powerful UVB you have to hang 60cm above canopy, and that is above the lights. With Migro lights it may work nicely but not with other lights. Especially if your main light is 40cm above canopy, that means the UVB is 20cm above the main light. It could damage it i think.
The older model Philips TL40W/03RS works. Not in the current Philips catalog, but "compatible" tubes are available online. Intended for salt-water aquariums, they're Not medical tubes, but do have a lot of UV-B. There's one catch: standard White enamel reflectors do Not reflect UV. The usual fluorescent bulb fixture must be lined with aluminum foil so it relects the UV. One-tube fixtures w/ reflectors are hard to find, so the smallest, lightest, two-tube fixture will work with a single tube. They can fit in a four-foot tent if they are hung at a slight angle to horizontal, on opposite sides of the tent, and halfway between the plants and the main CMH bulb, pointed at 90 degrees to either side. ( not facing down ). Two hours in the late AM, and two hours in the PM should be enough to trigger the response, but since the additional electrical cost is low ( 80W ) keeping them on for longer wouldn't hurt. Wear UV-proof sunglasses when they're on.
Hi, could you please tell me which side of the aluminum foil is better? The shiny or matte? I would assume the shiny side but i'm asking just to make sure. Thanks!
@@twentytwo138 I used the shiny side, but aren't really sure if it makes a huge difference. A side-by-side grow might settle the matter, but who has the time?
how long do the bulbs last, and how much are the replacements?
Thank in advance for your time
Good on ya for taking the time to get back in the past as well! Cheers
5,000 hour lifespan, link here: migrolight.com/collections/all/products/migro-uvb-310-fixture-and-fluorescent-tube#
@@MIGROLIGHT thank you, I found it in the store.
I wonder if there are any studies on uv light effects in houseplants. For example UV might express more of pink variegation? Did you happen to stumble on any research into uv (and other lenght) lights effects on houseplants?
Great channel btw.:)
I love the last interview with Andrew where they have all the varieties of plants being tested and you can see a couple Cannabis plants thrown in purely for science as well. These plants arent being topped or trained for yield in anyway, purely for study. ^_^
Unfortunately all research links in the description are dead?
Very Strange%:""
Hi, I copied and pasted them incorrectly, should be ok now. Thanks for letting me know, Shane
@@MIGROLIGHT ,
In your opinion, which lighting strategy would be more efficient and effective for cannabis at the seedling stage, directly following germination? T5 or a LED Grow light on a Veg. setting?
Which do you use, and have you executed an experiment on this topic? I thoroughly admire your research and would greatly appreciate your opinion.
-Loren
This video saved me from making a mistake buying a junk UVA LED... Thanks Shane.
I still like old school Super MH enhanced bulbs.
10/10
Ok ok ill buy your light. Yours is actually the best bargain that has honesty in marketing....we hope lol I'm sold
I don't know....I have both the MIGRO and the California Lightworks and the CLW was cheaper and is a higher wattage.
@@smokeyBJJ , I got the CLW as well. It's only 24 watts. With mine, they were rammed so hard into the box they got bent. The plugs don't fit tightly, and fall out with minimal handling. Of the 3 varieties I was growing, only one responded noticeably to the UVB. I started at 15 min, and ramped it up to 2 hours a day in the middle of the light cycle. Any suggestions?
@@pursaveer9027 start at 2 n go up to 4 hrs
@@pursaveer9027 no problems with my power cord or fixture. MIGRO is 18w vs CLW 24w
@@smokeyBJJ Do you have a link cheapest California work I could find was a 111 migro is 85 but 101 altogether with shipping
Como usar no grow o uv? Quantos minutos ?
Tenho uma lampada uv,E-27, de 20w e um grow de 60×60×160cm
Love your work, but still wondering about attitudes towards UV-C. Seoul Semiconductor has done a lot of research on it, including with horticultural partners. They systematically got the same results as with UVB, only using 10% of the power.
As your video pointed out, UV leds are expensive. I paid the same for UVA, -B, and - C diodes, though after initial testing only use the UVC.
Also, UV selectively boosts some terpenes and cannabinoids at the expense of others. This does not always improve the overall bouquet of the terpene profile. I had similar responses from insect infection.
you can use uvc. just have to keep safe distance from plants. uvc veg 48in above canopy. do not lower light. i use florescent uvc reptile bulb 18in 2 in 3x3 space. the uvc light tricks the plant into protecting its seeds. she will have sugar on her the entire grow if you start you clones out veg with uvc. if you start uvc during flowering you will see some leaf curl until she adjust. best to start off veg. allways turn that light off when entering space. My 3x3 space is extreme.I have (2) 1000w hps - (4) 32in uvb tubes (2) 18in uvc reptile tube (2) 90w ufo LED flower accelerator. i have auto sprinker and i use fog and watering system. i have a co2 generator also. i only use 1 pilot. grow room sealed. i grow using bubble soil technique.i play music the entire grow. i have 4 crops a year. i average close to over 2lb of buds and shake that i turn into buds using my special technique after harvest.
Any chance we could obtain how many UV lights/plant and grow times please?
should you run the ir and uv all the way through flowering or just towards the end
I have two of these lights. They're definitely increasing resin production. I am coming into week 3. Only downside but I could care less about it is the leafs curling up on the sides. They started doing it in week 2 of UVB lights. I imagine others will see the same thing how ever the leafs don't seem to be damaged. They're just curled now. All the buds are definitely growing more resin on the areas exposed to the UVB light.
Use the uv last 2wks flower
Do I run the UV lights same time led lights are on? Or 2 hrs when lights go off??
1-2 hours during light on cycle, last few weeks of flower only :P @@scarcorleon
Wouldn't it make the most sense to switch from LED's to CMH bulbs around the last 2-3 weeks of flowering, then? Seems that would give by far the best result.
Oyy,". Call me old fashioned but I Will always give my greens' n' purps' an hour or two of Actual 🌞 when possible or applicable .
But do appreciate your work 🍀🍀🍀🍀🍀 ! .
I have other grow lights in my space so how do i add in my UVB fixture around it?
@Studio8 did you figure it out?
I wonder if my uv fluorescent tube I have in my cupboard will work ?
The sun has it so I need it !! Bruce is knowledgeable but not always right , I've watched a couple two hour presentation's where he stated that coco was a great source of silica , nope ! UV will get you more color's and more resin but I've not seen a noticable difference in potency wich is my biggest goal after 67 year's my tolerance is pretty high , my Mars Fc6500 will give you an instant headache if not wearing a hat ....... plenty of UV and far red in this lamp if that's what you want !
He was actually talking about vermiculite.
🤦🏻♂️
Imagine. A UVB robot that lasers leaf data into the robot, and then flashes UVB onto each plant that is deficient in UVB!!
Wow, this is going to be invented. This is next level stuff
I started putting a @argomax 2' uvb fluorescence bulb the in tent additional to LED'S during the last 3 weeks of flower 12/12. Real frosty trees
How long did you have the uv on for?
@@dubz7669 full 12 hour cycle, last 3 weeks
@@theglassgirl420grow3 ok cool thanks , I've read that 2 hours would be enough mid light cycle but you have disproved that 👌
How high from the canopy?
More UVB info wanted
yes sir, i concur
(puts on sunglasses)
I have not been able to find any good information on a schedule implementing uv in my grow. I actually have the AgroMax uv bulb but it looks to be the same spectrum as the migro UV. I am wondering if you can give me a recommendation what time the schedule I should run it on in flower especially. I also saw Bruce Bugaboo say that you be in veg is beneficial and I am wondering what schedule you would use in the veg cycle?
I’m looking at uv enhancement now and am kinda stuck between your uvb310 and rapid leds uva light. In your honestly opinion which Uv responds the best in cannabis?
did your migro uvb light bar work for control oidium and pests?
Can you please make a bracket that fits this light to your arrays??
Hi Brendan,
The hanging height of the UVB fixtures is 60cm from the canopy, the ARAY fixtures hang much lower than this.
So what is the besf way to apply. I have heard 2 hours a day in flower. Are they say sayinf shorter burst every other day?
how much does this impact yield? i hear there are negative impacts to yield but is it a significant impact?
What is needed is a light fixture that has a seperate uv light that you can turn on when required. Switching lights in and out of the grow room would be too much of a pain
You don’t switch lights out, you run your uv with your led at the same time. You only run uv the first hour your led comes on and the last hour before it turns off
@@trademark256 That is incorrect, you are thinking of IR and Emmerson effect i believe. UV should be used in the MIDDLE of the light cycle, to stimulate noon when the sun is at its peak. Your schedule would mean that the plant gets UV in the morning and before sunset. But in nature those periods produce the least amount of UV.
Also, if you use a more powerful UVB like the ones you mentioned in the video, it's gonna burn the plants if you run them all day.
@@twentytwo138 so when should I use the uva lights? In flower I run my lights from 9pm til 9am. I have 2 HLG 30 UVA in a 5x5 tent
@@scarcorleon Then by your light cycle UV should turn on at 2:00 AM and off at 4:00 AM.