Grow light distance is not a single fixed number. The correct mounting height depends on the light’s intensity at canopy level, the plant growth stage, canopy density, and how well the system can control output.
Plants need light that supports photosynthesis and stable growth. In practice, the right plant lighting comes down to three variables you can measure and control: spectrum, intensity, and photoperiod. When any one of these is off, common results include slow growth, weak stems, poor leaf color, delayed flowering, and inconsistent yields.
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