SunBlaster T5LED Conversion Lamps are the ideal choice for advanced growers who demand higher quality light output， reduced operating costs， lower energy consumption， increased end of life performance with virtually zero maintenance， and no replacement for 35，000 hours. These T5LED Conversion Lamps provide the same great growing performance as our original 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 our traditional fluorescent lamps And they contain zero mercury， so they're friendlier to our environment.Find the T5 LED GROW LGHT 42W 48 at Ace.