Sunblaster T5 LED Conversion lamps are the ideal choice for advanced growers who demand higher quality light output, reduced operating costs, lower energy consumption, and increased end-of-life performance with virtually zero maintenance. These bulbs provide the same great growing performance as Sunblasters T5HO fluorescent lamps with the added benefits of reduced power consumption and an extended operating lifetime of approximately 35,000 hours. That’s 3.5 times longer than traditional fluorescent lamps and contains zero mercury for the benefit of the environment.