LED grow lights for shelf systems are a smart choice. Why waste energy on old-school fluorescent lights for home growing projects? These LEDs are over twice as efficient compared to traditional T12, T8 & T5 tube lights. They even outperform LED replacement shop lights. This Spider Farmer SF300 & SF600 review showcases top-notch grow lights that serve as excellent alternatives to outdated technology. Perfect for growing on window sills or grow rack shelf systems.