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Look for PPE (Photosynthetic Photon Efficacy) . A rating of 2.5 µmol/j or higher means the light is highly efficient at turning electricity into plant food. 3. Full Spectrum is King buy led grow lights online
The most common mistake is buying a light that doesn't fit your space. The "engine" of your light determines how long it will last
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White light makes it much easier to spot pests or nutrient deficiencies than old-school purple lights. 4. Look for Name-Brand Components