Grow Lighting Masterclass with Professor Erik Runkle of Michigan State University

[@apexshinbi638]

40+ mins of talking about JUST lighting. This channel is a horticultural gem

[@lolasnchz6094]

Agreed bro! Even with my low level english i wus so excited to see that video with so much fresh investigations and comparatives!

[@savonic2112]

Definitely 💚

[@batialexis9339]

I just founded this gem after 2 years F me

[@C...G...]

a big round of applause for professor erik runkle and a big thank you for making your videos! :-)

[@nosaj3000]

Thank you soooo much for these Master Classes. LED research is jumping in leaps and bounds and I appreciate you bringing ths new information for all of us.

[@FinehomesofNewHampshire]

Full spectrum white led grow lights have been around since 2011.

[@redechelon37]

@@FinehomesofNewHampshire They said research, not technology. All of your comments on the video are really sour..

[@PJWalmsley]

@@FinehomesofNewHampshire Costs have come down, efficiency has gone up, and it's becomes easier to obtain quality fixtures (rather than fixtures with poor light mixes, poorly connected/waterproofed leds or wiring, unreliable fans, bulky or weak frames, etc)

[@briankelley7918]

80s and 90s when we had metal halide and hps We had a green light in the ceiling light so if you wanted to go in the room when a light was off you just turned on the green light so you can see. Little did we know without KZbin. It was tough tough I tell you living in the 80s. But the 80s for an awesome time people cared about one another.

[@JJN603]

shane your are truly something new to KZbin. your videos have such good quility and give such an extent of information. I hope you continue doing stuff like this. the future is looking green and I can see ppl in 10 years still watching ur videos for information just because of how organized you and your videos are. this kinda video shouldnt be free on youtube IMO. but very happy it is :)

[@JA-wp6cj]

Finally, a scientific study from a credible source, and published on KZbin.. 👍

[@TheStp77]

Dude you are way too smart to be making KZbin videos thank you from all of us for passing it on!!👌👌

[@ruigonzaga1349]

Hi Shane, I'm from Brazil. I met your channel on yotube today. I'm looking for knowledge, and you do a brilliant job. Thank you very much, I will continue learning. Professor Erik Runkle is very attentive and knowledgeable, and shares with everyone. Thank you too Erik.

[@petergoestohollywood382]

I am actually upset to find, that I cannot hit the upvote button twice! Inspiring to have two experts of the field having such a healthy information exchange. Im still uncertain how all this plays out on sprouting plants in the cotyledon stage up until onset of the first true leaf 🤔

[@redechelon37]

Really solid discussion/video, learned a lot, thank you much. It's especially useful knowing that full spectrum affects seedlings, setting them up for success. After a month of research and absorbing the internet's "common knowledge", I feel like this video and the other masterclass with Bruce really cleared the cobwebs and helped me understand.

[@TechnologistLive]

Best part is the speakers do realize people actually grow something other than cannabis.

[@FinehomesofNewHampshire]

🙏

[@ArturoGarcia-er1hk]

Technologist Live it’s more like Cannabis still the underdog idk what f ur talking about smh. Sayin whatbu said is saying in the USA don’t grow it have any agricultural community at all. Out and Indoors

[@itzBiscuitsB]

@@ArturoGarcia-er1hk translate that for me so I can understand it. And make proper assessment it's to broken..

[@adamking4347]

@@ArturoGarcia-er1hk - WTF are you talking about?

[@FinehomesofNewHampshire]

@@adamking4347 😂 right?

[@jerkovicbrate]

Please do more videos like this. Thanks. And thanks Professor Erik Runkle for sharing knowledge.

[@hillbillyhydrogrower490]

Thanks for everything you do for the community merry Christmas

[@ritawang1845]

Merry Christmas😇

[@jimsutube123]

thanks for the video. I work in cannabis grows and most "lead growers" are formers black market growers. some are great, many think they know it all. I've been at it 15 years and there is always more to know. Too many people stuck in their ways, videos like this should be mandatory

[@NGM.I.G.]

this is fantastic for all us indoor farmers who have to jse LEDs indoors since we dont have availability outdoors, ive got a cross reference with another phd who talk specifically on lighting, and everything he says is exactly in line with Dr Erik's points he makes here...

[@Gro2healthheirlooms]

Please do more of these videos. Thanks so much for your help and great product.

[@blackbart99]

A most interesting interview....a confirmation of what I have surmised from multiple sources but Dr. Runkle's info is science at it's best...always a work in progress...Thanx...wonderful... keep up the excellent work....BB99

[@animalmother4066]

Thanks for the generous information, it really opened my mind to new things when growing flowers or what have you with LED. I've recently started an indoor grow specifcally for shrubs, pine and other specimans that I brought home from Northern California especially the shrub ceanothus because of its heavenly fragrance and goregous appearance. LED's have come a long way and they'll only keep getting better.

[@abdulkareemsheikh9718]

A wonderful interview / video long awaited. Well explained about the light spectrum on the growth of the plant at different stages. And the way the plants react to the different spectrum of light. Very nicely put forth. A hearty thanks for sharing this great news.

[@ethantucker2929]

Excellent information, one of the best explanations I have heard to date. Very well put together & the book he's published is on my list. Good work Shane.

[@mobleyMobley]

I'm a michigander!! I take my dogs to MSU Vet Hospital .

[@XoshBitt]

Wow.. thanks a lot! Too me 2.5 hours and 5 pages of notes to get to the end! Thanks to both of you!!

[@delta9jack162]

I knew this video deserved a Like even before starting. Very well-compiled information and great questions, Shane! Thank you

[@arcanusluvalus1388]

I’m going to get a migro, simply because Shane is a superhuman growmonk, Thank you for being you Shane!

[@circle4922]

Nice one, man.

[@Jake-xm6fl]

Awesome video. In all your videos you are very clear and straight to the point. I love your reviews you go above and beyond.

[@yourfuneral]

Thanks for making these information more easily available through your channel and thanks for interviewing Erik on this very interesting topic. Very much appreciating your work!

[@bkilpatrick1909]

Please don't stop making your videos. They are by far the best videos I watch and enjoy them 100%.😎

[@bmroofing8617]

Good job Shane.. hats off to you. With all the info out there it's hard to get a clear look at what to do to maximize your efficiencies tailored to the growers personal taste. From what I could tell this was a no bullshit interview looking without bias at one man's scientific observations. I'll probably have to watch it a second time to absorb a bit more. I'm not a light nerd but I an interested in knowing exactly how my lights perform compared to what else is available. Ha, maybe I am a light nerd! Always interested in vid's like this.

[@RoccatMax]

WoW! Shane your're truly a master ! Thanks for sharing such awesome information it was very intresting !

[@timpage5021]

Hot tip As you get ready to flip your plants into flower instead of 12 12 immediately lower the amount of light in 1 hour increments for the first 10 days. After 25 years winter gardening it mimics the shorter days in autumn and is less stressful for plants. Another way is when you turn your lights out turn em at 17 and half and have a red light on for the last half hour.

[@jansondennis2438]

just found your tip absolutely 💯% agree mate

[@kinaesthesia824]

Wow, fascinating! Love this channel. Thanks for always having enlightening content.

[@Rob-lj5wy]

I really enjoyed this chat, very insightful . Keep bringing us the knowledge we so need .👍

[@practicalshooter6517]

Unless we are ready to spend time and money researching as many possibilities for every specific plants, we should stay with a full spectrum that goes from, and includes, UV's to far red. Thanks for a very informative 40mn

[@Gro2healthheirlooms]

I'm going to buy migro led lights for starting my tomato plants and hydroponic greenhouse. Thanks

[@graemedevine9651]

Great video and information, thanks Shane.

[@AKMD999]

Thank you for these values of information

[@horlacsd]

as for the blue light + stem elongation in lettuce (as the exception) -- possible explanation the plant is trying to get more red . the sun's rays have more red content when it arrives at oblique angles (more Rayleigh scattering of the blues). a short leafy green like a lettuce might stretch to catch more oblique sunrays.

[@FinehomesofNewHampshire]

👏👏👏👏👏👏👏 you win.

[@Cobra-mw6tc]

Thank You for the in depth discussion. I wonder why the McCree curve is not at the same level on the Relative intensity scale on the UVB(40%) side as it is for the Far Red (60%)Side? I would think that would tend to tilt the results of a persons analysis.

[@ajgrows]

Real, tangible data. Thank you so much for sharing...

[@ninjafrog8419]

Awsome awsome job Shane!! Thanks for sharing. It was a very interesting listen 🤙 In the last experiment one optiob was not tested - red FR and green only. Seems like from the chart it would produce the biggest flower. Is it not?

[@lolasnchz6094]

Thanks a LOT !!!!!!! for such a great info! Now i know much more about mj! Really very happy to join ure channel

[@mysticmarks]

Also, the study discussion at 30:00 ignored an important experimental result; the root system. The large red addition promoted a huge root system.

[@mr__daly]

Well spotted.

[@erickoechling9307]

WOW!!I actually understood some of that!! Thank you Gentleman!!

[@ryucreativeltd7651]

thanks for the video, which would be your top 5 led growlights for home use

[@dr.kennethnoisewater26]

I appreciate all the knowledge you laid on me. Thank you

[@tacolover9956]

Will we have a best growlight 2019 video shane?

[@christopherparis6841]

U know its 2020 n stupidly u ask....there is no best light every strain and pheno responds differently. NASA aint using white n red ill say that lmfao

[@tacolover9956]

@@christopherparis6841 And stupidly you respond to a 9 month old comment with a even dumber response,your nasa reference says it all Shane made a video of the best 2018 light "he''tested years back Good job internet tough guy,you should ask nasa for am aplication lol.

[@jackgreenstalk777]

great show! thanks for sharing the data

[@zumbaladin]

Shane, thank you very much (again) for your very precious videos. We wish you a merry Christmas and a wonderful New 2020 full of videos and success for Migro!

[@Bright-It]

Professor Erik: You mention growth and development. Would you help me with selecting the best artificial light for succulents plants? Thank you very much.

[@JSC-c]

Hi Shane, not related to this video but was wondering if you could possibly do a ES300 video? Not the v2 but the “older” version if you can get your hands on it still.. if not, the v2 would be good to see a great informative video on them, thanks

[@extendedp1]

This was awesome, thank you.

[@greenbfingers]

Shane excellent content as usual , Unbiased information. Could you please check out the Maxibright 3k 600 w E40 Cmh bulb ? Maxibright are advising using them with old style magnetic ballast, as newer digital ballasts operate at to high a frequency. Bulb is £95 & you can pick up a decent new magnetic ballast for £20-25 & a Euro reflector for £10 . So £130 for a full 600w cmh kit. Would appreciated your unbiased opinion. Still rocking my migro 400 + "top notch light"

[@djgodey]

Fantastic video Shane,Ive been waiting for some quality facts on the effects of certain frequencies to plants and there cycles 10/10

[@vintasalo]

Knowledgeable and to the point!... I'm sure you could manipulate every aspect of growth through a controller and segregating the different spectrums for different stages or times of day Brings up more questions lol

[@Gro2healthheirlooms]

How many of your LED grow lights do I need for young tomato plant seedlings like 4 1'x2' trays of 72 plants each. Love the videos too. Thanks.

[@circle4922]

Hi, This is another *excellent* video. Thank you both for both. Shane, do you think you could make a copy of that.."normalized" spectral graph you made available for download please? (I think you referred to it as once) Where you took all the spectrums of various lights and scaled them to fit them best as you could onto on the same size axis. It's amazing to look at the the hps vs white led example that you show in this video and think how effective hps is. It has uv and ir, though wouldn't the uv be almost *completely* blocked by the glass bulb? Thanks again.

[@drrmagneto4176]

14:39 While it is true that blue light has been shown to reduce cell expansion in some plant species, it can also have other effects that contribute to larger overall plant size. For example, blue light has been shown to stimulate leaf expansion and promote photosynthesis, which can increase biomass accumulation and contribute to larger plant size. In addition, blue light can also influence the regulation of plant hormones such as auxin, which can affect plant growth and development. The specific effects of blue light on plant size will depend on the plant species, the intensity and duration of the light, and other environmental factors.

[@alanmagendzo9874]

Awesome. So, will this setup work well without removing the bulb diffusors?

[@queenzui]

Thank you professor

[@guyonamotorcycle1]

So... If I need to go into the garden during dark time, what color light can I use? Used to be green, but now Im confused...

[@HowToDoThings.]

I would love to see u review the Equinox 1000 led

[@unknown737]

So spectrum affects form and structure of the plant and but does not directly add to increased flower production; which comes in the form of light quantity and intensity. Is that right?

[@007380]

@30:00, the plants on the right had more intense light, correct? With the more intense light, did you increase the watering and nutrients too? Its my understanding that when you increase the light intensity you must increase the water and nutrients also.

[@dandojambo1176]

This is so helpful, thank you so much for your content

[@HappyPappy_420]

Another great video! Thank you

[@loerkue]

Awesome. Thank you Shane.

[@gabrielsawczuk9588]

This book (Light Management in Controlled Environments)? Grettings!

[@laurieedeburn2449]

hi... im in canada...do you have stores here that carry your product?

[@Soilfoodwebwarrior]

Thanks I learned a bunch. I love your channel

[@eugeniahobbs41]

Thanks Professor. (Round of applause from a filled lecture hall).

[@sessioncruz9070]

What was the question asked @ 8:44? I had a hard time understanding it. Love the channel by the way. Just purchased two of your UVb bulbs.

[@mackattack8627]

Thanks for sharing Far as artificial lighting I have Experience in Laser/ Fiber Optic - Endoscopic Surgical Procedures Florescent Hps/ Mh Yes love this after 38 years of growing cannabis I'm blown away with my Samsung 351h diodes with far red ir & uv with warm and cool white all in a 500w adjustable spectrum bar😁 Any plant species love em just as You guys explain here🎄🎄🤸🤸🤸✌️

[@kimodland]

The problem with the lighting picture is light leak. No isolation of sperate light source. Some will feed off other lighting. How can you judge lighting without control isolation grows?

[@michael2305]

Certainly some effects of blue photons are improved by adding red photons. Because if you use a MH lamp it's more or less a waste of energy, but in LEDs blue+red spectrum really works well and if you add IR spectrum its even better.

[@peterfalcon6449]

Nonplussed Bemusement I can not thank you enough for your insight. The MMJ industry has no idea where this is going to take us. I hope you both become ambassadors. Your perspective and integrity are at the forefront, none more than your reply as to which is the the best spectrum. "We don't know". It is up to us as Master Growers to figure it out. Personally , I have set a New Standard having produced almost 5PPPL Pounds Produced Per Light in a 5'×5' 👣with Sativa & Sativa Dom Hybrids. I am in the process of doing exactly what Mr Runkle asserted in the fact that it is up to us to figure it out. In doing so by years end I will be surpassing 5PPPL , for which will set the stage for an official New Standard early 2022. That being said, the day in the very near future of 20PPPL will be the goal to aet the newer standard. I won't be able to do that. I'm not the best grower. Meaning the best growers, namely plant manipulation experts will have the best of it along with a certain LED light in particular and the imperative, my medium/set up. Thank you both once again

[@RESNone208]

How many watts is the light in this 5lb/light measurement? Grams/Watt is generally used instead because one light could be 60w or 250+w LED and without telling us, we don’t know what that light that brought 5lbs yield is. It would be much more impressive to get 5lbs out of 150w than 400w.

[@Akira_781]

Thanks that was excellent! 🍻

[@PRN-Life]

Toobad im apparantly half deaf and my laptop speakers are at maximun and mr Runkle whispers , it seems to bee good explanation of lights definately going to look at this at another moment when im not deaf . i must have missplaced mr Migros name himself ? well real good videos ! / Paul Roger

[@upas81]

Ok looks we need more discussion about, pulse led light and direct light. As its creating some other effect. Also about OLED horticulture.

[@CG-nu9ru]

Can you keep us updated with the results of the taste research when published.

[@yannbr1]

subtitles please! this subject is very important to growners in all world.

[@pedclarkemobile]

Subtitles in what language? Edit: you can turn on "captions" on YT to get English subtitles, then paste the English into a translator app to get the language(s) you need.

[@tangobayus]

Which of these is equal to or better than sunlight?

[@Ravewayvideos]

pure gold , thanks again

[@vinisius]

This is a gem 🖖

[@jblazer2492]

Top notch!

[@TroyWatsonYEG]

Yes. I have done testing with blue light 440:460 nm spectrum (as supplemental light to sunlight in a greenhouse) for basil, kale, and other leafy greens - and it has the best yield compared to blurple or even other forms of white lights. The solid blue light surpasses yield and quality on all facets until you hit around 10,000K light where it seems to level off... K values higher than 10K seem to have an exponential improvement at 11k 12k and anything 13k+ becomes unstable and inconsistent to make... So we will call this 18k.... Each spectrum each with more blue than the last has better results in growth for crops that I mentioned above.

[@PeterKKraus]

Sunlight is 5500K on an overcast day, it's 6500k that's a generalization though. Because LEDs or CFLs don't have the full color spectrum of the sun.

[@theinfamousches1258]

breat intro. straight to the point. subbed

[@Followyourpassions]

Very intersting. Was planning to use uvb.

[@KevFPV]

Excellent 👍🏻thanks✌🏻

[@melemassimo]

this is gold ty you are the man

[@42071]

Thank you for this video, very informative.

[@gsfriendlytreesmmj1165]

Great video thanks for sharing it with us.

[@freddyfredk6070]

LM301B 2700K has a great spectrum. add a little extra 660nm and FAR RED, with some UV and you have a perfect spectrum for yield. with enough blue to keep plants happy.

[@igormarinkovic1531]

not blue enough for newest standards but if its u thats okay

[@wowiealbarracinmcclaskey5392]

What exactly are using for grow lights

[@mrkwa-385]

Great educational video Migro! Keep doing the great job! :)

[@JithinJose2]

100k views, still this is an underrated video.

[@brianfavaron4782]

What is the photon flux of a 100 watt led white light bulb.

[@MinimalRastalien]

Thanks for this!

[@wowiealbarracinmcclaskey5392]

I read watch every little bit of grow light research I want to build the ultimate grow light some day Migro drbugbee and Michigan research here Professor Erik What is best for canabis hemps

[@Humbulla93]

samsung f strip gen 3 3500K & 4000K driven at 700mA equals 16W per 56cm for 15$ each strip paired with a meanwell driver and you got the best standard no need to reinvent the wheel

[@diannabrownridge6618]

If green light is photosynthetic, why are my plants not affected by the green lights I use to see my garden during dark time ?

[@lessmigrantsmorewalls8392]

Green light is the least efficient and gets reflected from the leafs surface. This however doesnt mean that green light isn’t photosynthetic.

[@ZanyGeek]

Nice video! thanks