what's the best grow light spectrum?

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Dr. Bruce Bugbee discusses optimal grow light spectrums
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Two Legends in the field talking! Much Love!!!

bensmilesbetter
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Dr. Bugbee!!! I learned SO much from that man!

I've learned a ton about plants from Migro too!

OkieOrganixCannabis
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I always thought blue LEDs were the most efficient?! I know from experience that bulbs that shine at 7000K are usually more efficient than bulbs that shine at 2600K - the former give more light for the same amount of current.

goranjosic
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He forget mention yellow light totally, yellow light gives more photosyn then blue and almost same as red(but works same time with red). He does mention white light bringing green and blue but for full PAR spectrum yellow is really good too, and it's reason why HPS lights were always so good.

hanshurnanen
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This sounds interesting. Might want to work on how the shirts are edited tho. Could have edited it in the middle to make more smooth

singhmastr