Just Put Aluminum Foil on the Led Bulb and you will be amazed. - YouTube
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Just Put Aluminum Foil on the Led Bulb and you will be amazed - YouTube
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Amazon.com: Hywyimlait Aluminum Housing Grow Light Bulb for Indoor Plants, 20 Watt 4000K Full Spectrum LED Plant Light Bulb with High PPFD, PAR 30, COB Lamp Bead, E26, Energy Saving Grow Lamp