Growing with Red or Blue ..or GREEN led light? aka "whatcha talkin bout Willis"

Puff_Dragon

Well-Known Member
*if you don't want to hear me waffle; please go straight to the video link and see why i'm perplexed :)*

Being an outdoor grower most of my life (later going indoors with HPS). I have now tentatively been experimenting with led's for a number of grows (starting with the old blurple panels ..so i get a feel for the tech, and the (possibly silly) thought process that; if i can grow with blurple i'll grow even better when i update to newer led tech :)
So, i knew it all started with the NASA led studies (red, blue spectrum growing) and from reading forums how that spectrum has expanded over the years to include specific colour shades and uv light etc. However, it seemed to me the 'general' consensus was that green didn't do much of anything in the growing department (i know this view is/has changed somewhat more recently).

Now, I'm currently growing with a red/blue/green cob light, which got me searching around for info ..which lead me to this video from Japan. In it they are conducting a test where they CLAIM to be growing plants under just: red light, blue light ..and green light! You guys in this forum are more knowledgeable then me so ..whats up with that? :) Is it just a false test (perhaps due to light bleeding from the other tests/external light) and maybe that is skewing their results? It looks pretty high tech though .. and so i figure they know whats what :)
Anyways, enough waffling see the video below.

Skip to 07:24 to see the light growing experiment (although the rest is interesting to watch)
 
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VegasWinner

Well-Known Member
This is quite current info. There has been much testing to determine which light frequencies have which effect on plans growth. Here is a link to Lumileds and their horticulture division where they work on Deep Red 650nm, Far Red, 730nm, Royal Blue 360nm, and Lime s the four basic specrum for plant growth. They also have white 3000k/4000k/5000k, as well.
https://www.lumileds.com/horticulture/technology/
 

Puff_Dragon

Well-Known Member
thanks for the link Vegas. I'll check that link out when i can.
On a side note; does the info in this video mean i should avoid using green light during the 'night' cycle? To be honest, i leave the night cycle alone unless in an emergency :)
 

TheCatOutRanksYou

Active Member
I was wondering this same thing because I've seen people talk about it but always heard mixed results from grower to grower. Can anyone tell me some basics in case I do decide to experiment with it? Which color light do you use while it's growing and which color when you want it to flower? Is the light time still 18/6? Do you use normal lights with the colored light or just color?
 
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