Hydrofarm - The Advanced Quantum PAR Meter provides accurate and cost-effective measurement for all light sources used to grow plants. The PHOTOBIO by Phantom Quantum PAR meter is designed to measure PAR (
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Amazon.com : Hydrofarm LGBQM Quantum PAR Meter Micromol Sensor : Plant Growing Light Fixtures : Patio, Lawn & Garden
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Amazon.com : Hydrofarm LGBQM Quantum PAR Meter Micromol Sensor : Plant Growing Light Fixtures : Patio, Lawn & Garden
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