Optimal spectrum, high efficiency, quality components, and sturdy construction make Newhouse Lighting bulbs the smart choice for your color lighting needs. This grow light bulb has a complete spectrum tuned for plant growth. Red and blue leds target chlorophyll absorption. Far red leds specifically target photoreceptors called phytochromes in flowering plants to accelerate flowering, like sunlight. This LED Grow Light uses 80 percent less energy and emits less heat when compared with a 90W halogen reflector light.