UNIFUN LED Grow Light E27 Bulb Greenhouse Light Plant Grow Lights Growing Lamp for Garden Greenhouse (24w) UNIFUN Led grow light emits 12 LED lights. Blue light (460-470nanometers) is good for stem and leaf growth. Red light(620-660nanometers) is best for flowering and seed production, altogether increasing the yield by 20% - 50% which should contain 10-20% more total soluble sugar and Vitamin C as well as 20-30% more crude protein. Those grow lights are suitable for all stage of plant growth, you can use it in growing fruits, vegetables and many other plants, offering them an extra boost in production. The best distance between the lamp and the plant is 1.64-3.28ft. If there is no sunlight totally, the best using time is 8-16 hours which depends on the specific plant. The light is suitable for 10.8-21.5 square feets area, such as balconies, greenhouses, darkroom and so on. This Hydroponic LED Growing Lights can rapidly improve the health of plant and growing, generally more leaves will pop up within 2 weeks of using this growing lamp on a daily basis. Easy to Use. With standard E27 socket, it is easy to set up and use. No special lamp base needed and a desk lamp will do. Lower power consumption,high luminous efficiency and long lifespan. The longevity is long to 50,000 hours with intelligent IC.