The 18w Clone LED is the perfect replacement for a T5 fluorescent light fixture. 60% more efficient running off 18 watts, outputs less ambient heat, and throws higher intensity than comparable fluorescent light fixtures. Our 9000K spectrum was dialed in from 2 years of testing in nursery applications. Our balance of white, blue and red diodes was designed specifically for healthy rooting in clones. Daisy chain multiple strips together, easily hang in commonly used steel wire shelving with the included clips or use the integrated zip tie slot.