MrsBearxx
- 9
- 3
White light is blurple with a phosphor coat. Light is light and the plant will respond to it. Your plant will respond more to intensity than it will color. I am not talking about IR or UV, I am talking about PAR, and the visible spectrum and what goes into grow lights. People who hate on blurple read too much garbage from grasscity and that other marxist shithole site without experimenting on their own. It is about intensity more than color. Many of these so called blurple lights are no more than 100ws and that is the issue more than the color.
Have you experimented with color? You can buy 450nm COBs and try it yourself for fairly cheap. I personally wouldn't grow with one spectrum only but I wonder how many actually have tried it vs just swimming with the school.
If you had around 100w of blue and 100w of red and compared it to 200w of white......I am doubtful you will see much difference if you tried.
Perhaps something more than just color too? I haven't grown with either in years but does one produce more heat if the same wattage?
Kind of a sidebar but strains with large amounts of anthocyanin will also use red and blue more than a plant without it on its genetics. I am not sure by how much but I would estimate purple varieties use 15-20% more blue and red.
agree- all this has been known for 50 years.the university of Michigan proved intensity trumps spectrum back in the hps vs mh days. They recommended hps all the way through because it put out the most light per watt at the time.
however. Further research with discreet colored diodes shows blue light keeps plants short and bushy and red stretches branches and grows plants taller. So customizing how our plants grow with spectrum is a real thing.
I like my plants vegged with 6500k t5 fluorescent rather than my hps or even cmh because of the structure it brings.
agree- all this has been known for 50 years.
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