Aug 13, 2019 · But, there’s a reason why some of the largest commercial grow operations have made the switch to LED. A 600w HPS light can produce up to 150 to 300 grams in optimal growing environments, which is 0.5 grams per watt or less. LEDs, however, can produce as high as 1 to 1.5 grams per watt. All the while, …
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