Hydrofarm powerPAR 15-watt LED Bulb, Blue The powerPAR LED Bulbs allows you to give your plants localized spot illumination With low heat generation and light output equivalent to 130 watts of traditional incandescent The energy consumption of these bulbs is low and their service life very long-50,000 hours They fit into a standard incandescent light socket, making them easy to set up with common spotlight, work light and other fixture types The appropriate color spectrum for the vegetative growth phase