600 watt Sunmaster Cool Deluxe Conversion Lamp: HY

Sunmaster 600 watt Cool Deluxe Conversion Bulb. Metal Halide Bulb for use in a High Pressure Sodium Ballast. This type of lamp allows you to tailor the light source to the growth stage of the plant (halide blue light for growth and sodium red light for flowering/budding) by merely changing lamps.