Specification： Item No:G1200 Qty of LED:120PCS POWER:250W±5% Weight: 4.6KG Sepctrum: White/430-440nm/450-475nm/620-630nm/650-670nm Light Size (mm):L335*W391*H76 Package Size: L440*W350*H140 Voltage VAC:85-265V BTU:56DB Package include: 1*Led grow light 1*Hang kit 1*Power cord 1*Mannul Recommeded Hanging Distance Above Plants: Seedling: 24" Germination: 24-30" Veg: 48” Flower: 36" Recommended Lighting Time: Veg: 18/6(on/off) or 20/4(on/off) Flower: 12/12(on/off) Recommended Growing Conditions: The rate of photosynthesis and transpiration are directly affected by temperature,humidity and airflow. The perfect temperature and humidity for your plants are found between 75F-85F and 50%- 70% humidity,with plenty of airflow toreplenish CO2. PH is 6-6.5. You may add more celcium and magnesium than normally needed. LUMENS: WHY THEY'RE NOT THAT IMPORTANT: Google:Lumens are a measure of the amount of visible light emitted from a source. Chlorophyll mostly absorbs light in the blue range, red range, and far ranges of the visible spectrum. Chlorophyll does not absorb green or yellow wavelengths (although evidence suggests that green light helps drive photosynthesis). In sum, lumens do not tell us how well plants will respond to visible light. My view: if you think high lux, just add more write led. more write led lead to more lux PAR, or photosynthetically active radiation, is a measure of photosynthetic light energy (400nm-700nm range) that falls on the plant each second. PAR does matter. It is important for plant growth, however, many cheap PAR meters read the entire PAR range and not just the wavelengths required for photosynthesis.
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Worth the price
Good led
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