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Amazon.com: Apogee Instruments DLI-400 PAR, Daily Light Integral, and Photoperiod Meter - PAR 400-700 nm (Sunlight Only) Light Measurement Tool for Plants & Agriculture : Patio, Lawn & Garden
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Amazon.com: Apogee Instruments DLI-400 PAR, Daily Light Integral, and Photoperiod Meter - PAR 400-700 nm (Sunlight Only) Light Measurement Tool for Plants & Agriculture : Patio, Lawn & Garden
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