htg supply 400-watt high pressure sodium (hps) complete grow light, bulb included htg supply the #1 line of grow lights in the usa — htg supply value series grow lights are preferred by thousands of indoor gardeners across the country for their rock-solid reliability and versatile design in addition to their economical price. a logical remote system configuration allows htg ballasts to be located outside of the grow area to mitigate excess heat, and the unique split-cell housing keeps ballast components cooler for extended life and improved performance. htg supply grow light systems come complete with a specialty horticultural bulb for maximum growth as well as a highly polished and textured aluminum reflector for uniform light spread over the garden. value series grow lights can also be easily refitted with a variety of other reflector/air-cooled hood models (sold separately) from htg supply, high yield lighting, sunlight supply, and others to adapt to future changes in growing needs. system is ready-to-grow out of the box, and plugs into a standard household 120v grounded outlet. sow the seeds of success – grow with htg supply! <br> <br>ships in plain discrete packaging. <br> <br>quick tip: htg supply high pressure sodium (hps) systems include an enhanced-spectrum horticultural hps bulb that can be used for all growth phases, and provides the best light spectrum for flowering growth.