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by jaegerpicker 1453 days ago
Yeah, I'd agree with the underground part. Above ground vertical greenhouse's are absolutely viable but I'm not sure underground would make any sense. LED grow lights I'm using on Tower or aeroponics (Plants grown in towers with a gravy mist based irrigation and feeding) are much less than 30-40 watts / square foot, around 10-20 depending on the time of year but that's above ground in a greenhouse situation with Sun light help.