Best Grow Light Test 2: white VS Purple

Today, I will be testing white grow light and purple grow light to see which one is more efficient.

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[joshuarudd]

Sorry! Grams were actually Ounces in all calculations.

[eehhh]

Finally Straight to the point . Too many scientific youtube channels confusing me while comparing which is better. I saw another plant Enthusiasts and he said white can do just as good as ultraviolet sometimes even better with growth. All I wanted to know was could I use white cuz ultraviolet or Red hurt my eyes like crazy lol. Also White seems to use less wattage so better for the power bill! Thank you, you actually physically tested it.

[Felipe-vmyl]

i really want to see the next test on flowering plants. awesome video, thanks!

[Joanne-tj]

Thank you. I watched the 3 videos and found them very helpful. I think I’ll go with white lights.

[mollypitcher]

EXCELLENT video. I’m new to all of this. I purchased the purple lights for growing flowers last year. I hate the color but I’ll use them again this year($$$).
I still need to learn the difference between the regular “shop light” and the white grow light. “They” say the shop lights are just as good as grow lights - that doesn’t make sense! 🌸

[nosdamnamur]

Thank you for the information. Saved me a good bit of money. I enjoy your videos.

[michaelmasztal]

Nice video. Subbed. I’m getting back into hydroponics after a 5 year hiatus. The LED technologies have changed. I still have my earlier stuff but may pick up one of the newer lights.

[devdizriz]

Loved the video. Would say you should weigh the roots and leaf separately etc. Overall while some differences I'd say they were negligible and I know one reason to avoid blurple is to more easily diagnose disease

[LastEmpireOfMusic]

the taste differences come in very hard with herbs or vegetables. gets more significant with oil taste based plants. (like rosmary)

[equallywrong]

Off topic from the video, why do you grow hydroponic? Is it for health reasons? Is it to minimize bugs and disease? Does hydroponic food grow faster? Tastes better? I just started gardening outdoors in plastic grow bags. I gave growing both romaine and iceberg lettuce a shot. I found, in plastic bag, the lettuces was needed water often, as much as three times a day. When I cut my iceberg lettuce open I had a few bugs and a little leaf rot. But nothing that could be cut out or rinsed off. I can not make financial since of growing lettuce indoors unless it is for personal reasons. Do you mind sharing why you do it? Thanks.

[dustinclevenger]

I use purple and white for my weed plants

[eggspanda]

The science of spectrum efficiency proves that a mixed spectrum is the most efficient.
That mix should comprise10-20% blue spectrum and the rest can be made of either red or green as they are both very similar .
a general but scientifically accurate guide is
blue light inhibits cell expansion
green light helps us see
red light is highly efficient at photosynthesis
far red enhances cell expansion
they all are useful in photosynthesis i think red is about 15% better from memory

[kylesyx]

Plupurl “ haha love it !!
How much coverage can the light cover ?
Is it for the one plant?
Good job!

[cyruslever]

You shoukd really have measured that blurple light too to get the right distance. If you put the blurple too close it won't likely burn but they can stunt the grow or make it bushy if the plant doesn't have to reach a bit. I have a diff light and stuff but mine is almost 3 ft away from my plants I'm not growing lettuce tho

[ourv]

To answer the question of which light color is best, simply see what indoor farms are using.

!

[diabo]

Hello there i am ussing the same led light as here on the Video. Are they enought for grow and flowering ?

[jockey]

No offence but you have confused watts with watt-hours in the results section under the section where you multiple the power of the lights (In Watts) by the duration of the on time (hours). Watts is just a word that means energy per time. One watt is 1 joule of energy per second. One watt-hour is 3600 Joules of energy. By multiplying Watts by time, the result is energy. If you report watts x time = watts, then you're comparing power instead of energy.
Just for an analogy, its like saying you drove at a speed of 60 miles per hour (~100 kmph in metric world) for five hours and the distance you covered was 300 mph. It does make sense because mph is not a distance. The distance you covered was 300 miles. Ok hopefully not too confusing. Thanks for the video!

[jayl]

Was the purple putting out more heat waves ?

[ColtraneAndRain]

What kind of lights should I use for my aloe vera and bougainvillea plants that I have to take inside during the winter? We get snow and hard freezes. I have been bringing them into storage with a space heater and purple lights in the past.

[muffdriver]

If this is true, what is the point of the purple light?