spectrum matters

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Marine2143
LED Maniac
LED Maniac
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https://www.karger.com/Article/Pdf/489030
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tazztone
LED Lover
LED Lover
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Joined: Wed Feb 28, 2018 3:33 pm

"During a long photoperiod, a low R:FR ratio is preferable to make more developed long cuttings,
while during a short photoperiod a high proportion of blue irradiation is suitable to improve the medicinal value of cannabis in terms of cannabinoid content"
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