http://sippindustries.com/plasma-lights/ Advanced Plasma Lights Advanced Plasma Lighting Sipp plasma product line consists of two models, H400 and H1000. These are equivalent to 400W metal halide or a 600W HPS and a 1,000W metal halide or HPS. They are ideal lighting systems for indoor horticulture applications. With its optimized spectrum and energy efficiency, the lights have been shown to outperform both HPS and LEDs in terms of growth cycle, taste, smell and texture of the product while reducing energy costs up to 60%. Features: Optimized spectrum for horticulture >50,000 hours ballast life Easily replaceable bulb Rapid start Dimmable to 20% light intensity Digital or analog control Uniform light distribution