PowerVEG™ is different than other T5 lamps. Not only does it produce a well-balanced spectrum for your plants, it also provides UVA and UVB. UV is an essential component of the spectrum that produces stronger, healthier plants, allowing them to produce higher-quality fruits and flowers. The sooner you introduce UV to your plants, the better your end product. No other T5 bulb on the market produces a spectrum with this quality or UV of any kind.