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If you're not a fan of fluorescent for indoor grow then EFDL may never interest you and you'd never give it a second thought. But to those of you...
When converting from a UV source to a R/IR/FR lamp source if the wavelengths the plant is in need of are not present it will lead to plant stress....
I run a perpetual with 6-8 plants per week. In the interest of reducing the monthly electric bills from high wattage lamps, the heat they create...