SolarSystem 550 Programmable Spectrum LED, 90-277VSOLAR SYSTEM 550 The SolarSystem 550 is a game changer for LED grow lights. The SS 550 is a high power veg and bloom light that draws 400 watts and will replace a 600 watt HPS light. The SS 550 features fully programmable spectrum control which enhances plant growth and increases yield. Three separate spectrum channels can by programmed by the day, week or season to best match natural sunlight. Key features include: High power LEDs for best yields in