Why Are Grow Lights Purple? Plus 3 KEY REASONS Why You Should Avoid Using A Purple Grow Light

Have you ever wondered why some grow lights are purple? And do they actually work better than white ones? In this video we’re going to explain how and why some grow lights are purple, as well as look at three key reasons why we think you should avoid them.

00:00 - Introduction
00:37 - Short Answer
01:21 - History of LEDs
02:42 - Reason #1 Economics
05:07 - Reason #2 Plant Health
07:44 - Reason #3 Liveability

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[GetUrbanLeaf]

DOWNLOAD OUR FREE GROW LIGHT CALCULATORS HERE

[pedrocoentro]

I still use a burple light I have together with sunlike new ones, until it breaks I'll keep using it, excluding the visibility question it works reasonably well. Don't throw them away if you already have them. Just my opinion. Thank you for sharing. Compliments from Portugal 🇵🇹

[shinnam]

My coffee plant bloomed and made cherries with a purple light. Not ditching it.

[Os_]

Oh man I certainly don’t want my plants to lose their sexual desires. Thanks for the video!

[Johndoe]

I tend to like to keep a mixture of light in my grow rooms !! A little bit of everything! I’ve found spacing purple lights every other light and mixture grow lights mostly white every other with a few extra led strips and also smal shop lights! All light can be beneficial it’s about the balance of it!

[Theausomecaleb]

I have bought a ton of mis grade blurpple lights when cannabis growing first started.
Switched to cobs and the colas we're bigger in size however the potency was lacking.
Added back some blurples to the mix and wala perfect combo.

[jedjones]

It's important to know the health of your plants which is difficult to see with blurple grow lights.

[mathewhunt]

incredible video! thanks for making it and answering my question with the science to prove it!

[blackmoses]

Just keep an eye on your plants if it's growing then keep doing whatever your doing

[single_use_planet_]

8:58 I'll use a neutral light for my plants but personally my entire room is covered in a 30m long purple christmas light that my neighbor gifted me 😅 I have photophobia with migranes, so I'm really light sensitive, purple light is a bit more bearable and since it's spread out over a bajillion leds it doesn't hurt my eyes so much, but for my plants I'll start using a diff light!

[tomask.]

This is by far the most informative and trustworthy video about LED lights I have ever seen!

[seetheforest]

I remember taking a computer class back when everything was just text. It was black snd white. Then came color. New computers had two colors green or orange text.

[haroldgreen]

I think most people have their personal favorite color combination. I use blue/white leds in my grow tent for short dense foliage. Red tends to create tall spindly plants. My greenhouse uses white led (5K) shop lights. They supplement the weak sunlight that penetrates the triple glazing on the green house. The combination of natural light along with white leds seems to improve growth on my vegetable plants.

[michaelcarey]

about 14 years ago I took Luxeon III 3W emitters, and using the graphs for Photosynthesis A and B, I took the integral to find the area below the curves, and used that as a percentage of total wattage, and then used red (670nm?), blue, and royal blue emitters according to the wattage by area. I added two "white" emitters per 100 watts for a more comfortabe "rendering" effect - apparently these "white" emitters "filled in the gaps" of green, yellow, orange and other frequencies.
The light still works today, and while not as bright as it was (but certainly enough that you do not want to stare at them), it STILL works better than any of those "full spectrum" or cheap China R/B/UV/FR lights.
Those weird purple COBs are NOT what you want.

[HogwartsBasement]

You are 100% correct the white lights perform the same result as grow lights however grow lights can work at a much lower watt and current as it only emits light that’s usable by the plant. If your attempting to keep costs low then this could be an option

[TheObserver]

Low wattage purple lights are good if you're trying to keep a plant alive and growing but slow growing because you need the extra time for crop rotation' I keep clones slow growing under 24 hours of purple lights because the mother crop takes quite some time to mature and if I didn't give those clones low power purple lights they would rapidly outgrow the space I have available.

[TheNate]

I have both, mainly purple with 4 full spectrum leds for normal growth, full spectrum for inspection and just general lighting in my bedroom. That isn’t even counting the led strips lining my room.

[C_Kava]

My 3500k led grow light in my closet makes wintertime feel like summer

[beachday]

NASA was looking into the energy savings by selecting specific spectrums. But in space, every watt matters.

[liveent]

Awe man 😫 I just found a purple grow light in my lighting bag that I forgot I had. I hope my young plants will be ok with that until I can get an upgrade