EcoSuma 120-Degree Beam Angle Big Irradiated Area 22W E27 Tri-Band Spectrum LED Plant Grow Light For Hydroponic Garden Greenhouse The effect is quite significant, growing 3 times faster than the natural growth of plant. it help plants boost of photosynthesis at dark indoor and basement ect. The best proportion of red and blue of LED Growth Light is from 4: 1 to 9: 1 in general. When the LED Grow Light supplements light to the plant, the general height is about 1.7ft from the blade. Continual 10 hours per day light exposure can completely replace the sunlight. The plant photosynthesis requires light wavelength 400-700nm, among which 400-500nm (blue) light and 610-720nm (red) make the greatest contribution to photosynthesis. Blue (460nm) and red (660nm) of the LED provide the exact light for plants. Blue light promote leaves growth and red light accelerates blooming and bearing fruit and extend the flowering period. Therefore, the ideal option of LED Grow Light it to combine two or more colors. The visible color of red and blue is pink. 6pcs 660nm LED, 3pcs 630nm LED, 3pcs 460nm LED, The light wavelength totally absorbed by the plants photosynthesis. This LED grow light with long lifespan. Enhanced passive cooling system allows for reduced junction temperature, even 24 hours a day. LED Growth Light offers a solution to the lack of sunlight in winter in greenhouses and promotes chlorophyll, anthocyanins and carotenoids which is needed in photosynthesis. It saves the harvest time 20%, increases the production of fruits and vegetables 3-5% and also highly raises the sweetness of fruits and vegetables.