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AlienScrOG started grow question 3 years ago
i can grow with all red ?? 240 watt .. tell me the percentage % of blue and red please
0.36 m"2
15 weeks
0.36 m"2 AlienScrOG
+1 strain
2 comments · 2 years ago
Week 6
Techniques. Defoliation
Removed answered grow question 3 years ago
A lot of the commercial blurple lights are a 65+% Red for bloom and 30-40% for veg phase. :alien:
It depends on the plant, but the general consensus is blue is for veg and red produces denser buds, but you need to have a mix good mix to allow the plant to absorb light from all over the light spectrum. So there is no real answer, it depends on your grow environment, light quality, strain, and nutrients.
During a long photoperiod, a low Red - Blue ratio is preferable to make more developed long cuttings.

During a short photoperiod a high proportion of blue light will improve the medicinal value of cannabis in terms of cannabinoid content.
Great article!- Reference:

Good luck and happy growing! :muscle::muscle:
Fruitgrower answered grow question 3 years ago
So the big debate.
As I understand the blue lights represent spring and the red lights represent autumn.
You can grow for the first few weeks using blue only but apparently red cN help root growth.
You can also grow for the last few weeks of flower with red spectrum only but I do believe that you should use dual spectrum all the way.
Philindicus answered grow question 3 years ago
Hey bro You typically need more blue than red in veg stage and more red than blue in bloom plus a few others. It's very complex. The best explanation I've found is California Light Works website it has some good info and reading material. They tell you which colors of the spectrum plus uva,uvb and infra red are best during each stage of your grow. Their lights are top notch but very expensive but give you the best control over the color spectrum with programmed controllers. Hoping one day to own a couple of their lights. Good luck and Good reading.