5pcs lot LED Grow Light 660nm Red and 455nm Blue LED Lamp for Plants Input Voltage 85 265VSpecification Tube Size W20 H35 L295mmEmitting Color 10 Red 4 Blue each tube 14led Working Voltage AC85 265VWavelength Red 660nm Blue 455nm Packing 5pcs x T5 LED Grow Tube1pcs x 1 2M EU US Plug Switch Wire4pcs x 17CM Connect Cable4pcs x install components The Effection of LED Grow Light for Plant 1 Different wavelength of light has different effection to plant Plants growth needs photosynthesis Research shows that 400 710nm wavelength of light plays an important role for plant 455nm Blue color light and 660nm Red color light are playing the most important effection to the growth of plant 2 455nm and 660nm wavelength of LED light are used to make LED grow light when they match up with each other the color of the light is purple red 3 About 455nm wavelength of light Blue light It can promote the absorption of chlorophyll and carotenoid for plant in this way it has big effection for the growth of leaf and fruit 4 About 660nm wavelength of light Red light It plays the most important role for the photosynthesis of plant so it has big effection for plants root growth promote and prolong the florescence increase the products 5 The proportion of red and blue light Different plants need different proportion of red and blue light and different time of growing also need different light Normally we use Red Blue 6 17 1 and Red Blue 6 1 is suitable f