How to use UVB with LED grow lights

Why use UV in the grow room? Read more here: migrolight.com/blogs/grow-lig...
Shop MIGRO UVB (global shipping): migrolight.com/collections/uv...
I demonstrate how to setup the MIGRO UVB grow light with an LED bar light, the ARAY 8 PRO in a 4ft x 4ft (1.2m x 1.2m) grow tent.
SAFETY: Do not stay close to the UVB fixture (less than 3ft or 1m) for more than 5 minutes. As with sunlight prolonged exposure will burn the skin and damage your eyes. There is not UVC output by the fixture.
The 2ft or 60cm ARAY UVB is 20W output and will cover up to 5ft x 5ft or 1.5m x 1.5m
The UVB fixture should be hung at 2ft or 60cm above the plants canopy. This is 40cm or 16" above the LED bar light. The LED bar light surface ares is less than 20% of the canopy area so 80% of the UVB photons pass the bar light and reach the plant canopy.
In this setup there is a range of 150 µwatts/cm² in the centre to 50 µwatts/cm² at the edges and an average of about 100 µwatts/cm² over the plant canopy. This is less sunlight mid-day sunshine in summer which would range from about 130 µwatts/cm² to 180 µwatts/cm².
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[@MIGROLIGHT]

Hi, Shane here. Thanks for watching, Please hit the like button and subscribe here: www.youtube.com/@MIGROLIGHT?sub_confirmation=1 Buy my Grow Lights here: migrolight.com/ Follow us on: Instagram:instagram.com/migrolight/ Facebook: facebook.com/MIGROLIGHT/ TikTok: www.tiktok.com/@migrolight

[@MrTommytide]

Shane, I would like to say thank you for the ridiculous amount of hours and intense training you put on yourself there is no doubt in my mind you are a master of lighting. Your service is very much appreciated and recognized. Tom

[@honawikeepa5813]

I live in New Zealand, and have 8 sons' living in Sydney Australia where they were born. One of them recently started growing and I recommended he visit your channel so as to not make the mistake of buying rubbish lights. He ended up with a Spidefarmer light and seems to be very happy with his progress. Cheers and thanks.

[@lordperezident]

Isn't it illegal to grow cannabis in New Zealand or is it legal now? Lol either way. Keep running it and start growing with him??

[@nevercaughtmeintheact]

@@lordperezident learn to read

[@Ozhull]

You rock Shane, thanks for everything you do for the community

[@timphanyswimchester1227]

I'm also called Shane . There's not as many of us here in England, so people always call me Shaun . I wonder how many other UK Shane's are experiencing this problem . Perhaps I should start a support group. Being a Shane in Sweden is actually much worse though. Over there 'Shane ' sounds like the word ' Tjejen ' which means , ' the girl ' . I was in Dublin a few months back and it's like a sanctuary for Shane's . We're all over the place and people can pronounce our name better than I can myself. It was refreshing that nobody asked me to repeat my name two or three times before they inevitably call me Shaun . In England a Shane has about a 95% likely-hood of being some guy's dodgy mate from prison but in Dublin , Shane's are free to prosper and live productive, meaningful lives . It's a real Shane-gri-la .

[@mexemsu.g.d.975]

🤣😂🤣😂🤣😂

[@MIGROLIGHT]

We must stick together, maybe I'll organise a gathering next year😜

[@AnnhilateTheNihilist]

Random… but funny 😆

[@jimkinch5313]

😂😂

[@camz1039]

Excellent video Shane. I'v been waiting for this one.

[@bearcatbbq7891]

"As long as you maintain the hanging height of approximately 60 cm or 24" above the canopy....." was exactly when anyone with a tent quit listening LOLOL

[@robertmiller6822]

My tent is 2.3meters so I could get away with but yeah I get ya with a 200cm tent but it's possible but definitely not In a 180cm height even 200 would be fairly hard.

[@bearcatbbq7891]

Yah, you'd have to have a real tall Gorilla tent or something, or maybe some super squatty Indicas

[@localcomputerrepairs]

Agreed… I operate my t5 & t8 ballasts around 12 inches above the canopy in-line with my led fixtures (non-migro fixtures). Placing the unit at 24 inches above the canopy which is usually well over the light fixture is not going to work for the vast majority of anyone in a tent (most of us). It’s really impractical. Imagine having to put this over a more robust light without all that spaces between bars… it would be entirely ineffective where a vast majority of the light hits the back of the heatsink and never makes it to the plants,

[@DavidAudios]

My tent is 200 cm tall, totally doable

[@damianlee289]

Was always curious about this myself thankyou greatly for all the info you provide

[@hempwithgg]

Thank you for this . I appreciate the data and information. Growrs love

[@kellyhill4410]

Thanks for that informative update really appreciate it. Thank you 🤜🌟🤛🌾🌾🌾

[@QuantumFarmer]

Thanks Shane for that info 😎👍

[@ghostgrowz9750]

It’s like you read my mind, I have been considering running uvb in these final weeks but was worried of the risks. Canopy height would be my only concern at this point. Thanks for the video, your knowledge is greatly appreciated!

[@OneStopGrowShopHydroponics]

great video as always mate!

[@gregkramer5588]

Thanks again Shane.

[@c.v.3721]

Keep it up! realy enjoying your videos

[@manantialestrip1]

Excelente explicación y demostración de el UVB. Gracias Shane por tan buen trabajo.

[@cannabisoutlawz]

Im definitely getting the Migro UVB light

[@MIGROLIGHT]

Hi, Send us an email if you have any questions. [e-mail] Thanks.

[@f8thless1]

You should do a video on the different types of light meters, what they measure and why it matters including the PAR functionality of the new Pulse Pro

[@user-ex9vc7xq4o]

Thanks for the info 👌

[@tshred563]

Just ordered 2 of these. And the Array 4 for my new 2x4 Gorilla tent. This will be my 2-3 plant CBD tent. My 3x3 has a Viparspectra KS3000 and I'll add the UVB 310. It will continue to be my THC tent. Thanks for all you do Shane. I

[@HalfBakked218]

Its does the opposite for cbd that it does for thc production

[@tshred563]

@@HalfBakked218 I hadn't heard that. Wow. I need to look into that.

[@HalfBakked218]

@@tshred563 this guy mentions it kzbin.info/www/bejne/j3qVq5loh7KNidk

[@rickwhite9748]

I ordered a UVB light from you and I can't wait to set it up! Thanks.

[@alxs2666]

Any update ? Better terps ?

[@rickwhite9748]

@@alxs2666 I'm 23 days into flower, as soon as the trichomes show up I'll monitor them and give another update. Thanks for asking.

[@scarcorleon]

@@rickwhite9748 any update? How many hrs do you use the uv? Any specific glasses you wear?

[@rickwhite9748]

@@scarcorleon hey, how are you doing? I have it on one hour a day in mid-cycle, I've been using it for about one week and I'm around 6 weeks into flower, so far I haven't noticed an increase in trichomes but I'm told it takes a couple weeks to really notice any significant difference. I'll definitely keep you posted, should be harvesting late October possibly into early November, Sativa pheno loiks like it has a longer flower period.

[@roadrunner7441]

@@rickwhite9748 Update

[@menikmati3187]

Great info as always, thanks for sharing Shane 👍

[@moetg8569]

Thank you Sir 🎩

[@philippendres2533]

Good JOB!

[@johnboy8594]

Cheers and thank you :)

[@GreenFalcon85]

cant wait to get my Migro UVB

[@paulhuk2748]

Top man, thank you.

[@happyg.444]

Bought 4 of the 4ft Pure-5 UVB's about 3 or 4 years ago. With little knowledge at the time, I scorched the hairs right off the plants. lol

[@scarcorleon]

Did you figure out how to use them properly?

[@happyg.444]

@@scarcorleon They're sitting in the closet at the moment. Been building lights with 360nm and 380nm diodes added on a separate channel. I'll get those UVB's out again sooner or later. That was in my earlier days of building led lighting systems. It was pretty new tech for everyone back then.

[@loopy8329]

It's my very second growth in my life....Finished my first cycle with uvb 310 about 1 month ago...I'm now enjoying results and I can say that my last potatoes growned under this light are much more tasty than the other made before buying your light...all of them were autos (same strain from same seedbank) so I can't really estimate if it's all about the uvb or just the phenotype...but yes, last one was very covered by frost and much tasty as I said....can't wait to grow couple of clones to see the real potential....I'm happy but to be honest I was expecting a better quality overall for the fixture...the power cable seems to be a chip one. I'm saving money to get one of your aray soon or later , actually I'm using a ts1000 but due of its design is a pain to use uvb on top of it.....I guess aray 2 with uvb310 in the middle will make it perfect for a 3x3

[@macspud28]

You will need the aray 3 for a 3x3

[@brianmcdermott2596]

great info, thanks! maybe you can help me understand something. i noticed many of the larger lights led have the 3000k and 5000k with the rich/deep red(600nm) but only include the IR and sometimes UV on the smaller models. could you please help me understand why? see the upgraded spider farmer SE5000 vs SE7000 as an example, thanks!

[@chela7771]

Thanks Shame always precious in your evaluations ... I have a question regarding the photonic passage through plastic and glass .. I have a box with inside 730 365 385 and 285 nanometers divided in height by food film which creates two separate environments, , one from 0 - 150 upwards and 150 upwards for the lights .. I conditioned the air in the lower part from 18-21 45-50% humidity and just above the food film canopy (PE) 25-28 36-40 ..it is evident that the separate growth parameters are very different resulting in a reduction of photons lost especially in the UVB UV spectrum and 730 .. ... I try to maintain the temperature 18-21 45-50% humidity with reduced ventilation ,, parameters best to avoid evaporation oxidation modification of terpene profiles and other volatile compounds .. for optimal growth, however, prof. bruce bagbeee suggests 23-26 45% approximately ,, parameters that are not valid to preserve degradation chemical modifications and losses of volatile compounds ... I have to buy separate solar meter uvb uva farred and check how much photon loss involves passing through a food film classic .... if you would give me some tea measurements in advance I would be immensely grateful. ...

[@lf1899]

Thank you!

[@archdevilzero5020]

amazing way :) u just have 4 bars cutting down ue uvb light :D

[@tronas4449]

I wanted to ask you if it would be more efficient to only keep on the UVB light solo and turn off the other lights for a couple hours a day? would the plant absorb more UVB light if only just that UVB lamp would be ON? And the other question would be: would you make a smaller UVB lamp in the future? so that small growers would be able to fit in a small box for about 50cm hanging height (from the pot). Great videos man 👍 I would love to see some tutorials how to make an DIY 660nm red light, something similar to the: "DIY LED Grow light build | Build your own cheap simple and efficient LED grow light" video)

[@nxtlvlyt4466]

Are you pulsing the Uvb or do daily intervals. I read UVB is best when used intermittently.

[@axelmendive5116]

Yes, some use UVB 45min to 2hrs per day in the last 3 or 4 weeks. Not for best but for not damaging the plant stressing it .

[@drimages1649]

Sorry I only skimmed the video because I already bought your uvb light and did a bit of searching on the matter but I still can't find the answer. Just a question because I got 2 for a 4x4, If I put too much uvb, would it have the opposite effect on producing terpenes? I figured for 1.5 hours a day it should be okay, more so just the cross-over I'm worried about

[@darcypotterpotter6214]

Would the use of the uvb light help to prepare plants for outdoor transplant,,ie by exposure to the uv prepare the plants for sunlight

[@bemat5220]

Great teat. What about UVA? Any difference from UVB

[@jesseslack2202]

omg migro i got number to call but dead end i think i won somethin hopfuly a light but i dont know what to do i love your show and you

[@brasco8721]

I recently purchased the Mars Hydro UR45 which has 30w UV and 15w IR. I have the mars hydro FCE8000 that I'm going to attach them to. The UV seems to have only UVA in the 365-420nm and IR in 730-745nm. How would you recommend using this light since it's only UVA do I use it during the full light cycle or still 1-2 hours mid day? Also how would you use the IR? They are both on independent switches so I can toggle them individually or both at the same time. Thank you!

[@maddpharmer2045]

Ok what’s up migro (Shane). I just noticed this video after I purchased a Gavita uvr. Stand alone led sorry but they were readily available in a timely manner here in Michigan. First off I love everything you do for all of us home growers. Questions that I have can you possibly test these types of lights mammoth-gavita-hlg-growers choice? Also will these lights help with mold- powdery mildew if not that sucks lmfao that’s why I purchased them. But more oil sounds good too. Oh and if this will not help with powdery mildew is there a light that will help

[@JasonEyestone]

PM is an issue with controlling humidity and temps 99% of the time.

[@tshred563]

What is the light schedule you recommend for running this light on to autoflower genetics?

[@nicos2929]

Would it be possible to hang the UV in a corner of a tent, Reason beeing the use of a Mars hydro tsw 2000! Hanging thé UV above the lamp would be waste... Thanks Shane

[@timpage5021]

You should see the paint on my grow tent poles. It was nice bright green 5 years ago. Now its a light pastel mint green. Lol

[@twentytwo138]

Hey, do you think there's a chance of burning the stuff in your tent? Like the mylar, fabric of the tent, fabric pots, plastic trays, plastic fans, rubber cables from the lights etc.

[@MIGROLIGHT]

No, its lower level than UVB in sunlight

[@timpage5021]

@@twentytwo138 no bubba. No danger of anything like that.

[@BenjeZOmbies]

Thanks for this Shane I’ve got mine too close by the looks of things, not sure how I’m going to hang it so high without blocking the most of the uv b 🤔 I’ll have to have a think.

[@MIGROLIGHT]

You can hang it on the side and tilt inwards? It may work for your setup.

[@archdevilzero5020]

Try solacure uvb it have less par so easy u can hang it on 20cm as ur leds

[@matlip.]

can a normal led panel for ceiling work as grow light?

[@goodgreen4616]

If using a Zoo Med ReptiSun T5 HO 5.0 UVB Lamp - 39W - 34 in. 4.6(249) With 2xs the watts. Should I run half time at 2 ft or hang higher and stay at 4 hours? What would u Recommend?

[@K_Nasty]

I have a splitter with 2 different reptile uvb cfl. I have the on for the middle 2-4 hours in the middle of the 2nd half of flwr. I habe mine less the 12 in. Based off my understanding of cfls

[@citygonecountry150]

May be a dumb question but i wonder if this can be repurposed to help people deal with seasonal depression using artificial sunlightm obviously at a safer distance for a short period of time. I suffer from it in the winter and I have gone to tanning salons and it def helps along with taking vitamin d and going to the gym

[@twentytwo138]

Sorry to say this, but the question is indeed dumb. I mean, i understand your idea and it does make sense to some degree, but to even think about buying this light to be suntanning yourself on your own is just asking for problems and dangerous health issues like skin cancer and blindness. These lights are not meant to suntan people lol, it's meant for growing plants. There's a big difference between UV grow lights and suntanning UV lights. Just like there's a big difference with standard grow lights and the lightbulbs you use in the house. You wouldn't use a 300, 600 or 1000 watt growlight to light up a room, would you? These lights come at different UV wavelengths, intensity, power and percentage of UVA and UVB. I think the MIGRO UV light comes at 75% UVB and 25% UVA. This is far from the spectrum of the sun. In nature it's the opposite, much more UVA and much less UVB. There's a reason why in tanning salons you are able to touch the bed and be so close to the lights, because they are meant for people. You can't do that with UV grow lights. Also everyone's skin is different and there so many variables with UV lights, you simply cannot come up with a proper formula to suntan yourself. Just don't do it please! Go to a tanning salon and make it simple. Or simply go out when you feel depressed and get some natural sunlight, even in winter you would get enough. And also, sorry if i sound rude and that's not my intention. But if you go to tanning salons, take vitamin D, go to the gym and all that stuff, and you're still feeling depressed, then it's not a seasonal depression, it's a chronic depression and no amount of UV would help you with that. Something else is bothering you and you need to tackle the core of the problem. Everyone's body is different but i'll compare myself as an example. I'm 25 years old and for the last 5-7 years i'm spending time at home all day long, playing games, watching youtube, smoking weed etc. I only go out at summer, and i don't even suntan myself or anything, even though i live right next to the beach. I run a summer business and i only work during summer. It's not making me depressed. If anything i'm more depressed during summer because everything becomes so busy, loud and chaotic that i can't wait for winter. Personally i enjoy quiet and calm times, intense times make me depressed but that's just me. I do feel weaker and i do have less energy in winter of course, but when i get that energy in summer i feel more depressed because of busy life. Firstly it's a mental problem, the body comes second when it comes to depression. There are people in Scandinavia and other northern countries who live a large part of their lives in darkness due to winter solstice, and they are strong, healthy and happy (most of them at least). My advice is, keep doing what you've been doing now with tanning salons, vitamin D and the gym. Find a hobby that truly makes you happy and fulfilled. If you are happy and enjoy your hobbies, you can be in darkness 24/7 all year long and you would not feel depressed. Another advice is, check for mold and mildew in your house. If you live in a humid area there's a big chance you have mold hidden somewhere, maybe behind the walls etc. Mold toxicity causes depression and anxiety, along with a plethora of other body problems and health issues. Mold can be even deadly. Just an idea to think about. And if you really REALLY must use UV in your room, get a proper tanning bulb meant for humans. Or those small UV lights used for reptiles, bought from petshops. And buy UV protection glasses with a proper UV wavelength for your bulb. But i wouldn't use any of that, it's better to be depressed than have cancer or blindness. You can also burn down your furniture and bleach your items like wood and plastic. Also, i assume you're not fully educated and experienced on UV lights since you're asking this question (nothing wrong with it, just an honest observation, i'm no expert either) but if you're not fully familiar with all the wavelengths and dangers, i would suggest stay away from it or get an expert to guide you. Good luck and hope you start making yourself feel better! It all starts with your mind and your spirit, make yourself feel better from the core, forget about artificial crap.

[@citygonecountry150]

@@twentytwo138 i am treated for depression and i have no symptoms and its beennlike this for 15 years until the dead of winter and then its mild..i did not know if there was a difference between tanning lights and this light..thats why i was asking. I would never buy this light for that reason lol. I was just curious. I guess i was asking because i was thinking about a scenerio where i had my tent left open for whatever reason and i was in the same room for whatevr reason that i would receive any benefits from it. I was never planning on laying under it but u wouldnt know that by how i wrote this so thats my fault lol. Depression sucks and i avoid it like the plague because it destroyed the first 25 yrs of my life. I am very lucky to be treated and have no symptoms except a couple months out of the year.

[@jakelooter5139]

@@twentytwo138 you can tan with UV B bulbs pseudo intellectual online moron,,,it is the SAME spectrum as the tanning beds. I personally have used my UV B reptile light to tan MANY times safely. paragraphs to say nothing of value,.,,,

[@yam5179]

Hi, what kelvin are these lights? They look around 3000k? I’m interested in getting them for my indoor plants but hate super white/red/purple etc light

[@ahlers1977]

So 1 will cover a 5x5? I just ordered 2 for a 5x5 off Amazon. Asked if i needed 1 or 2 before buying & was told 2. 😕

[@kittywampus]

Does your bulb have the same output as the pure uv bulb? I just set up an inexpensive fixture and made an aluminum foil reflector for a pure uv bulb. Currently running 4 hours at midday at almost 3 feet from canopy. Seems to be doing it's job but now you've got me thinking that I'm too far from the canopy. Thanks for all your great videos. I'm running this in a 2.5 x 2.5 with a grow 200 Oh, also my plants got to see the actual sun a couple hours a day during their veg and early flower stage. Edit: I see I'm 24w t5 and you're 18w t8 so maybe my height is correct.

[@MIGROLIGHT]

Hi the Pure UVB has a very similar spectrum and a height of about 2 to 2.5 ft should be perfect👍

[@timpage5021]

Yes the Agromax Pure UVB T5 is a beast.

[@krazykillar4794]

I've never seen them that high before. Alot of lights are incorporating uvb bulbs nowadays. Maxibright have released these uvb led strips , 60w strip is £230 to £290 . Way too expensive I've you ask me . But If they really increase resin and terpene production then it's worth it I suppose 👌.

[@user-rx6ms6ul8d]

Hey what are your thoughts on running 30 watt uv light from hlg at night to help with powdery mildew. Not sure if this would blow the 12/12 light cycle or if they are even uv-c that actually kills powdery mildew at night. Thanks for you response

[@420homegrowz5]

More lights more wave lengths of light hps with uv cfl with leds I guess you need a new par meter to tes multiple lights at one

[@peerrucke2599]

does it work vs vampires...in case they do exist. Thats the elephant in the room question everybodys asking himself.

[@MIGROLIGHT]

Hi, We haven't tested it on vampires yet sorry: )

[@jordizbuciux8118]

Shane how many ours use uvb a day in last 3 weeks?

[@weed_monster_grows]

Good UVB and UVA big topic nowadays everyone thinks Uvb is necessary and all though I use them they are not required most leds already put out uvb so beginners beware👍 I don't Think there is a such thing as optimum spectrum and unattainable at cost comparison. I use it in veg a little and mostly late flower to help with trichomes production and far reds flash for 15 minutes to help plants go to sleep faster before light out cycle and seems to work well. In my opinion it's a good tool to add to your grows but not a necessity Thanks for sharing Shane love what you do long time follower and supporter👍🏻🙏❤First time I ever saw you was 3 years ago with Bruce Bugbee great collaboration and good episode with the 2 of you explaining all the spectrums. Has anything really changed since then ???? Thanks Again Shane u rock👍🏻

[@twentytwo138]

Honestly i don't think most LED lights have any UV at all, let alone UVB. If your LED has UV, it's most likely just UVA in the higher wavelengths like 350-400nm and that is almost nothing, maybe it will increase the flavor and aroma a little bit, but not THC and it will not stop mold. Those LED UV diodes are like a toy, like the invisible UV pens or those money-checking UV LED's. To produce UVB LED diodes is very expensive and the LED light would be expensive as hell. Probably the diodes would burn out fast as well. Are you sure you didn't mean HID and MH bulbs? Because those produce UV as well as IR. I have Mars Hydro TSL2000 which is a fairly common LED light and it doesn't have any UV, just some Infrared diodes. Even their newer model like SP don't have UV anymore, they removed them. The FC series has some UV, but it's not enough to get a decent result. LED UV is just not efficient.

[@weed_monster_grows]

@@twentytwo138 well actually YES Just about all the leds light have sum correction in the spectrum on all these new full spectrum lights in my opinion I could be wrong but I'm pretty sure a lights have sum uvb photons. (Correction) ( UVA ) Not UVB already without adding more( Thanks SHANE ) That's all I was saying g I would love to hear sum feedback from Shane or anyone who knows imonly going off off prior knowledge I've acquired but I could totally be wrong please tell me if I'm wrong Thank you all & Thanks Again Shane you Rock 🇺🇸👍❤🙏👍🏻💯

[@MIGROLIGHT]

Hi, LEDs cannot emit UVB at any useful level and are uneconomic, you are probably thinking of UVA LEDs which are basically deep blue and do not have the same effect as UVB, thanks, Shane

[@weed_monster_grows]

@@MIGROLIGHT OK Cool thank you for clearing that up my mistake. Thank you for that I love learning and I love learning the right way even if I'm wrong I think alot o g people get offended when they are told they are wrong or have been misinformed I truly appreciate learning the Right Answer's that checks out 👍🏻🙏😁

[@rmcnasty7319]

IS Spider farmers 30 watt led UVA LIGHT ANY GOOD. ? DO I NEED BOTH?

[@bananas7479]

Out of curiosity if I couldn't manage the distance could I just run it for less time per day

[@Convolutedtubules]

Yes, but get too close and it will cause problems.

[@michaelbean739]

Are these lights available for the U. S. Market Thanks Shane.

[@Ozhull]

Yes they are! :)

[@tedshred8932]

Growing Autos. I started the 3 week UVB a little too early I think. In one week it will be 3 weeks but the plants have another 2 or 3 weeks to go. Should I stop it now and resume later?

[@kevinkeelan354]

Would it be worth hanging one above a 240w quantum board in a 4x2 tent, or would the light block most of the usable UVB?

[@vinniez2188]

Keep your qb240 to the back or to the front. Not perfect but it will allow the use of the uvb

[@dstolf]

I have a led with uva, how should I supplement your uvb bulb? Don’t want to over do it but don’t want to skip out on my b

[@MIGROLIGHT]

Hi, just add the UVB as I recommended. The additional UVA will not cause problems. migrolight.com/collections/all/products/migro-uvb-310-fixture-and-fluorescent-tube#

[@1TheWhiteKnight1]

Great timing. Was just looking at this. What do you think of UVC for disinfecting a grow space?

[@MIGROLIGHT]

I would stay away from UVC lamps, very dangerous IMO. They are not just dangerous for you but will damage your plants also.

[@timpage5021]

UV-B already helps a smidgen. Itll help keep WPM at bay and flying pests like gnats.

[@buddahlovers]

would it bee 4 veggggg the blue

[@matprang4508]

Amount of time in an 18/6 light cycle for uvb? I thought I heard you say in another video that 2 hours mid cycle or something to that effect.

[@MIGROLIGHT]

Yes, 2 hours is perfect

[@matprang4508]

@@MIGROLIGHT thanks for clearing that up sir!

[@John15293]

@@matprang4508 but you shouldn't be using it in veg if I recall. Just last few weeks of flower?

[@timturk1899]

I've read that UVB can keep plants from stretching as much during the first 2-3 wks of flowering, as well. Then I'd just use in the last 2-3 wks of flower. Starting with 15 minutes a day and moving up 15 minutes each few days, and maybe an hour per day max, as I've found these lights are very powerful, when experimenting without a timer (Duh?!), and ruining my crop by accidentally leaving it on for 12 hours. So be careful everyone!

[@thomasmcdougall8059]

What height do you recommend to hang led light above autoflowers 18hr of light

[@MIGROLIGHT]

2ft or 60cm above the canopy for two hours per light cycle in the last two weeks of flowering

[@kylewashington3106]

I want to introduce uvb to my grow. My current light is the volt VL-1 and with that size ballast it will block alot of that uvb. So can the uvb be hung under the light if the light is the appropriate distance from the canopy?

[@MIGROLIGHT]

Hey, You can add it at a minimum of 45cm from the canopy but keep an eye on the plants for stress.

[@ryanrough4254]

ânybody use the Lumii Black?

[@robertmiller6822]

Hey Shane I've got the migro uvb would it be OK with cmh mixed with leds

[@MIGROLIGHT]

Yes, the plants dont care what the source is, they just want the photons👍

[@bobbywitcher5042]

I use two 54w 75%uvb and 25%uva

[@martinconneally8756]

Uva damages plants i do believe good sir.

[@neilallan456]

Are you trying to replicate sun set with the uvb? What about sun rise? Could you use it at sunrise too🤪😎🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@amitsinghjeer3921]

@migro thank you

[@revoltoff]

Would love to see a crop steering solution, the raging kush is the best light after the scorpio diablo but really, the raging kush is better for crop steering. Would love to see a migro light to add to that list honestly shane. Can we have a raging kush competitior?

[@localcomputerrepairs]

This is simply not true

[@forsis80]

With the options i got on my Monsterboard pro 7200 id blow past the Scorpio.

[@timpage5021]

Raging Kush 2.0 is a beast.

[@forsis80]

@@timpage5021 Do not know it, had a look. It looks awesome. The price that s another thing....

[@bobcprimus]

2 more weeks!

[@moreheatingac791]

Would this combo be like the Emerson effect

[@MIGROLIGHT]

Hi, No the addition of UVB will increase terpene production in certain strains.

[@shortridgeE2023]

Hey Shane I'm Tim Shortridge I received a message saying I am one of the few winners of 10 Light give away, sir is this notification accurate.

[@sepasoulfly3725]

hi there can i use uvb just on its own? or must be used together with other grow light? thank you

[@MIGROLIGHT]

Hi, They should be used with your normal lighting setup. Thanks.

[@scarcorleon]

@@MIGROLIGHT how many hrs at a time?

[@bradpuhakka3955]

What about UVA there's a new fixture coming to market the Oxilus sunlike Pro 8000 that comes with both UVA and UVB. Just wondering if it's even worth using?

[@smokeyBJJ]

Uvb isn't available in LED fixtures

[@bradpuhakka3955]

@@smokeyBJJ go look up the light you'll see for yourself.

[@smokeyBJJ]

@@bradpuhakka3955 can't find any info on that fixture..

[@bradpuhakka3955]

@@smokeyBJJ they're fixtures are in testing right now and only started pre-orders on them. Quite a few people are getting them I'll see if i can find a link to drop for you

[@bradpuhakka3955]

@@smokeyBJJ my bad bro I misspelled it. It's called Oxalis Sunlike Pro 8000

[@Asnes45]

So this will increase the yield? Is this something someone need to use? So many questions... haha . Is it worth using?

[@SageLakshmi]

My understanding is uvb does not increase your yeild. What it does do is increase the trichome production when used during the final week or 2 of flower. Since too much uvb can be harmful for plants (and ppl), you really only give uvb during the last couple weeks of flower, and you only give your plants uvb a few hours a day

[@seemyworld1]

@@SageLakshmi It puts your plants in a defensive mode so they create terps/oils/trichomes but the energy to do so is taken away from plant growth. That is why it is only for the last few weeks after growth is done and you are waiting for ripening.

[@goodgreen4616]

If not, check out uvb lights for reptiles.

[@SageLakshmi]

@@goodgreen4616 I looked briefly into uvb lights for reptiles but I dont believe they have nearly the wattage to be effective for plants. I could be mistaken I'll have to do more research

[@seemyworld1]

@@SageLakshmi I believe you are correct. You do not want to fry your reptile, so they are lower output and designed for more output time. What we want for plants is a higher output closer to UVB from the sun at noon but only for a couple hours per day.

[@rainbowtrout9743]

people will go for this more if its incorparated into an existing grow light

[@TS-gs6vp]

What do you think of cosmorrow 40w UV

[@MIGROLIGHT]

Its a UVA LED bar. UVA does not stimulate the increase in terpenes and flavonoids. Its basically just deep blue light with no additional benefit to the plants than low efficiency photosynthesis.

[@csolorio88]

@@MIGROLIGHT what's the band that the UVB marketed lights should cover?

[@420somewhereG]

👍🏼✊🏻🇮🇪

[@pyrotodd187]

I got a message saying I won one of the lights in a giveaway if this is true how do I get it

[@MIGROLIGHT]

Its a scam , please dont respond. Thanks, Shane

[@nandodando9695]

6:00 Time

[@giskio]

Hi Shane, just received an email about the floraflex giveaway: "congrats you have been selected among the shortlisted ". Fake ? Thanks

[@WestSide-hl1dl]

Sounds legit, give them your ssn.

[@MIGROLIGHT]

Its a scam , please dont respond. Thanks, Shane

[@giskio]

@@MIGROLIGHT thanks, better luck next time 😖 Have a nice day Shane and your Team too👊

[@giskio]

@@WestSide-hl1dl Nice try

[@madbotanyorganicfarmsllc1603]

Doesn't aluminum reflect UVB

[@MIGROLIGHT]

Yes, raw aluminium i.e. without any coating. You can use tin foil👍

[@madbotanyorganicfarmsllc1603]

@@MIGROLIGHT why thank you for your time and answer.

[@mrkymrk99]

I tried one run at 24" and 2 hours/cycle, in last 2 weeks and my plants fox tailed. I can't say for sure if the UVB caused the fox tailing, other things can cause fox tailing such as genetics and high temps. But on my current run I'm going to hang it at 48" for 1 hour/cycle. I realize it will be a very small dose but I'm in a tent with reflective walls so there will at lease be a little UVB bouncing around.

[@vinniez2188]

Over feeding and to much wind will also create foxtails

[@cameron1536]

If you ever feel like a career change (please don’t) you could clean up as an audiobook reader

[@joseantoniolinan6865]

😃👏👏🏆🇪🇦🇪🇦🇪🇦

[@auraglasswerks4900]

Looks like you could use some UVB/vitamins D😂. Ya pasty bloke😝

[@MIGROLIGHT]

LOL, I will be a blue shade of white by spring

[@auraglasswerks4900]

@@MIGROLIGHT i found this interesting. 385 nm light is on the boundary of UVA and visible light. It is proven to increase cell wall thickness and health, making the plant more resilient against intense UV, pests, mold, and mildew. The combination of 385nm UVA and 285 nm UVB triggers the photon receptor responsible for improving the chemical profile of Cannabis. 285 nm and 385 nm have an entourage effect on secondary metabolite production when used together. Thanks for all your good work.

[@Gypsyukgrow]

@invisible sun is better and quality 💯

[@derrickwhite8599]

This dude has such good information! But is spit problem drives me crazy! No one should produce that much spit! Yeezus!

[@akay5036]

Bro has mucous that he just can't clear out of his throat

[@cameron1536]

If you ever feel like a career change (please don’t) you could clean up as an audiobook reader