What is the best Grow Light Spectrum | Photosynthetically Active Radiation PAR explained 

I really love your outdoor shots, the ambiance is great ! The animations are also really cool ! Keep up the good work Shane

I am so happy that you didnt quit, and you keep pushing!! Great contecnt as always, thank you and all the best to you👍👍

You are invaluable. I'm taking a lot of time to learn before diving back into growing. In 1987 I added sodium lights to my grow room after discovering someone had crashed into a street light. I went out and cannibalized the light. Times have changed.

Thank you for the information. Learning more every day thanks to your video's. 63 years old and still a learner. I grow weed at home for my wife who has a Bipolar diagnosis. Medical cannabis cost an arm and a leg here in NZ. I used a 400 watt HPS for many years however our son who lives in Australia sent me a 450 watt quantum board recently and my results improved significantly. Cheers from New Zealand.

It's absolutely amazing how far grow lights have come by since the early days of the 1kw bulbs. Good for keeping the grow room warm but not healthy on the pocket. I find your videos very helpful and easy to understand.

Very informative. You're a diamond among the coal of the internet. Thanks so much.

As always, an excellent, educational and informative video. Thank you once again Shane, your service to the growing community is very much appreciated.

Thank you Shane. The education you provide is more appreciated than you know.

Your production values plus your insight are top notch. You are very well positioned to become YT's best light advisor. Much respect to your non compromise.

All I have been trying to learn over the past year about LED grow lights really well explained here!! THX!

Thanks for another great video , it's so great that an owner of a company like you is giving us all this free advice and information it blows my mind thanks again so much peace out brother

AS ALWAYS, great vid Shane. Thank you.

how can you not appreciate shane. total devotion. clear and concise. and nice to get his take on some basics. also for me personally makes it soooo appealing to buy his lights given all the thought and hard work he’s put in.

Thank you Shane. Your videos are extremely helpful to me, a home grower.

This is the reason I bought arays. The man knows his stuff. No brainer

excellent information shane! great video.

Great video as always thanks for a simple, well done, walkthru of lighting systems to date. Cheers.

Must've watched 50+ of your videos Shane, superb content - thanks for your generosity

Great info as always. Thank you. You are my go to when I need lighting info. ✌

Excelente aporte como siempre,un saludo Shane.

Always easy to understand and digest your excellent content. Thanks again Shane.

Well put together vid for people new to this subject.

thankyou,,,, i love how you get your points across

Awesome video for growers,it’s can save a lot of money for farmers and reduce wrong light selection 👍🏽

really great video, cheers g

Nice step up in quality sir. Cheers and thanks for all the great knowledge.

Hey thanks man this is very helpful I'm a guy that actually owns all three of these lights and continue to use them so it's cool to compare them, I really just use the high pressure during the cold months

Great vid thanks a lot Shane.

Love the educational videos!

Keep up the good work !!!

Superb show Shane! every day's a school day 👍🏻

10/10! Great video!

great video brother . thank you

You are so cool that i cant be not loving your reviews :D

This video was excellent 👍

Thank you. Nice and compact

😎 awesome video!

Well done. Good to know our findings are mutual.

great video!

LIT Tshirt !!! Shane admitted finally hehe

Hi Shane, thanks for your work! Could you please tell us what equipment you use to verify the spectrum of the lights? Is it capable of detecting uv and infrared? Thank you!

Bought a t-shirt to thank you for all the education.

Spectrum explanation for anyone to understand well said! When can we see you review a nextlight?

Thanks Shane

Thanx for all you do Shane........l just cut down 2480g(wet)+400g of popcorn,,of boned n gutted Runtz,grew with the Migro aray 8 pro in a 1.2x1.2......lt has pissed all over my 600w hps,after an iffy 1st run.....the buds are like pine cones,dense as phuck,so I'll more likely get nearer a 25% return when dry...your info was invaluable when l took the expensive plunge into led....

Very good information and understandable (👍)

Excellent

Hey Sean if green penetrates farther through the canopy. Why do we use green light to work in the dark I always thought green had no plant growth properties?

Great video Shane, Ps: @11:22 i want that picture, lol

Shane, when you say metal halide are you referring to cdm/cmh or the traditional halide lamps? just put together a 2x1m area with the idea to use x3 315w fixtures with one 4000k and two 3100k agro bulbs but after watching this plus a couple of your vids on light, space and conditions im thinking i probably only need the two 3100k units for my area. and should i have gone for leds..? thoughts pls? thanks, learnt a lot from your channel.

Great PAR tutorial! This will absolutely help out the newer grower! And for us veterans of growing , it's a good refresher vid. Stay well Shane, looking forward to the next one. ✌️🦨🌲💪

Would love to see a review vid on your migro aray 3. Can't seem to find it on your channel.

How are you gonna be testing the fohse fixture? The 1500w one. Please let Us know.

UV-B seems to help ripen faster too. If useing MH HPS last 3 weeks of flower put back under the MH to finish for added resin and cannabinoids.

Nice write up!

Dear migro have a question i hope you will answer for me i have plants that have started to flower outside, i need to bring them in no my tent is on the opposite side off time to each other would it be best to expose them to an extra 12hr off little or an extra 12hr darkness hope you or your followers may help thanks for all your content my first stop for any info

Nice explanation

i used the UV + IR on my plants in the veg stage week 2 up to 4.. and some leafs just didn't grow, but came insanely big!

Thankyou very much

Thank you so much

Is it advisable to use red light during the vegetative period and use blue light during flowering as complements? Thanks for your video and help friend!

Question. I made a diy light, leds and fluorescent. 45 watts at 5000k, 20 watts 4200k whoch is a florescent fixture, 90 watts of 3500 k, 20 watts 3000k, 35 watts 2700k. I also rin a 160 watt quartz halogen light for 4 hrs per day is this an acceptable spectrum of light or should I tweak the percentages

Where can I gat a sort of starter kit? Do you offer it?.

Hey can anyone help me pls. How good is the spectrum on the grow 300 ? thanks alot.

You are a legend.

The flower grown under cmh always presses more yield than the LED grown, I even tried adding UVB to LED runs to increase but didn't work. Any ideas?

Thanks for information. Fast Buds stated that although autoflowers can grow very well on 24 / 7 the lights themselves may be damaged by continual use. As a manufacturer is there concern around 24 / 7 use.? As for as the plants, my experience is they thrive on 24 / 7 with no visible signs of stress, even though some pundits say this is harmful.

Nice

Another banger

I think it would be cool If light manufactures sold a lux meter calibrated to par for their specific light, in a tent and outside a tent. That way you could get like a 30-50 dollar par meter sure to be accurate within 50-100 par . Could be a really good way to separate your light from the crowed if you bundled your lights with a calibrated lux meter.

For anyone growing in a closet, you can easily supplement your main grow light with some cheap RGB LED strips from Amazon around the bottom and the outer perimeter. Place some aluminum foil sheets on the floor to get the light bouncing around. With enough saturation and reflectivity you can eliminate the need for low stress training techniques completely.

When the student is ready the master appears

Hi Shane,you are definitelly right about fare red and UV spectrum.Doesnt have any benefits on LED lights;-) I have tested in exact same conditions custom bords with UVA ,far red and 6000k,4000k,2300k SMD’s on one bord and just few COB’s with 4000k and there wasnt difference ;-) So you are as always right!:-)

Isn´t the far red for the Emerson effect? if i understand it correctly it boosts the productivity

i always seem to get brown rusty spot leaves on led lights . never got that with cmh. some say cal mag ? any ideas

hi Shane please test optic tech 650s I think🤔 the blue and red spectrum Chanels are bs I only get gains when I turn up white channel I think red and blue lighs are decorative PS THANKS SO MUCH FOR YOUR CONTENT KEEP IT UP MATE FROM CANADA🇨🇦

Anyone ever thought of using old surveillance cameras that have infrared, and have one or two of them running all the time?

I use 3000k LED rail light and my plants always seem to finish early

this dude loves light.

Add more different lights add more spectrum?

Should have watched your video before I bought the wrong light. How important is wattage? Is a 26 watt sufficient? I am seeing others on the market with much higher wattage.

Sounds like you follow Dr. Bruce Bugbee. Good explanation.

One of youtube, growing since experts is Harley Smith, it would be interesting to see interview with him about Light. How it is used in growing stages, how to make plant to sleep faster, better taste, etc. He knows alot Know How. How to make improvements in short time. Also, its better les but longer day light, then more light in short day.

Thank you again for your knowledge, but I think all wavelenghts have their own function + synergy on photosynthesis...Bruce Bugbee proved it no?

Dr Bruce Bugbee has recently made claims that PAR is now 385-720nm.

Cmh and led is the way to go these days

Hi Shane. Love your content and need a little advice. I recently talked with Mars Hydro about the 1000 for flower. I'm under a TS600 atm' but flipping to flower soon in a day or two. I asked if the 600 will do for flower in a 2x2, but conceded that I'd probably get a 1000 for mid to late flower stage anyway (since its within budget range). The rep' said the 600 & 1000 have the same spectra. But the photon intensity (wattage?) is higher for the 1000 (obv*). She/He stated that yes, the 1000 will produce better yield, but since I inquired about my supplemental side lighting of a 2000w (prob 45w*) blurple "theoretically" lending that extra 45w to the 600's 95±w (yeah I know, it doesn't work like that). She told me that I'd need more red. But as she said, the 1000 & 600 have the same spectra. I asked where will the extra "reds" come from if they both have the same spectra, and didn't receive a reply from that point on. Really pissed me off. Am I missing something ?

0:54 Ahhh, my eyes!

Shane should go on dude grows

This is why it's impossible to beat the medicgrow ez8. 1000w with white and red leds. All you need and super cheap

I have never seen a LED grow that impressed me LEDs are expensive by the time you get the same coverage your running more watts than a hps

One thing is not correct. When you add far IR LED's you can mimic sunrise and sunset, what you do with that is up to you, if you keep running 12/12 it will do nothing. The plants take about 2 hours to know it needs to go to sleep and change and stop photosynthesis and go into night mode. If you use far reds this goes down to 30 minutes. What you can do if the plant (strain) allows is run 13.5 hours of light and 2x30 minutes of IR, this will ensure that you give the plant proper rest time as well.

the Black Dog people sell the costliest grow lights. the basis for which is presumed to have lots of research and study to justify what they are asking. thus i was all ears to hear you say their led mix had been reverse engr'd . and their secret recipe of discrete frequency leds is now widely known. and how that combo fits in with your presentation for its efficiency. except no mention of them was heard. did i miss something ? comments invited

👍🏼👍🏼👍🏼✊🏻🇮🇪🍀🇮🇪☘

The lost Gallagher brother?????

I agree that far red and uv are a waste of money

😃🏆🇪🇦

ok when u went indoors u can tell you just smoked lol

Big fan of the migro light but have to admit that the quality which for me is max out terps is lower than with other lights. U can smell the difference already in midflower. I think there is a little room to enprove. Greetings ✌️

i am early