600w LED Plant Grow lights New production in hot sale !!! CE and RoHS ... reason why they are called led grow lamp, LED grow lights, LED Hydroponic Light, LED Plant Grow Light, LED ... knowledge within the scientific community, that there are only 5 light bands that are necessary for plant growth.2 ... absorbed by plant, much efficiency compared o HID grow lights to produce the same result9)Ratio of Red, Blue ...