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PAR LIGHT (Photosynthetically Active Radiation): Spectral Quality of Horticultural Lamps & LEDs -AlboPepper.com
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Philips LED 532969 PAR38 Plant Grow Light Bulb: 1200-Lumen, 5000-Kelvin, 16-Watt, E26 Medium Screw Base, 1-Pack, 1 Count (Pack of 1), White - - Amazon.com
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