Description: Light Type: Full LED Type: 2835, T8 Double-line Voltage: AC85-265V Wattage:18W LED Light Color: Simulative sunlight, Red : Green : Blue=57 : 21.3 : 21.7 Specification: Style (as you choose): 60cm or 90cm 60cm Style Overall Size: Approx. 60x3.6cm/ 23.62x1.42 inch 90cm Style Overall Size: Approx. 90x3.6cm/ 35.43x1.42 inch Plug Cord Length: Approx. 15cm/ 5.91 inch Luminous Flux: 1800lms Protection Grade: IP65 Temperature Rise: 6500K Material: Aluminum and PC Surface Color: Silver Note: 1.Plants need 12-16 hours of sunlight per day, photosynthesis during the day and rest at night. 2.In good weather, plants can be illuminated for several hours, before and after sunrise, while on rainy days, illumination time should be increased. 3.Following the laws of nature, usage time is recommended around 12 hours. Plants have their own regulations about the photosynthesis, according to the actual growth. 4.During the day, plants absorb sunlight for photosynthesis. At night, plants exchange carbon dioxide and oxygen by respiration. 5.It is suggested that plants should be illuminated more on cloudy days, less on sunny days, more in winter, less in summer, more in the stage of seedling and fruiting, but just regularly in the stage of blossom. 6.The best distance is 30-100cm. 7.You need to control the distance between grow LED light and plants in installment agriculture and greenhouse. Package Includes: 1 Piece of Double-line T8 Full LED Grow Light Tube