De.Ablo All-in-one Reflector/BallastThe double ended bulb is a versatile all in one fixture that uses 1000W DE lamps which offer great intensity light and an increased light spectrum for healthy plant growth. Not only the horticulture fixture ensures an increased light spectrum, increased lumen maintenance. The grow light comes with promises of accelerated warm up times. The grow light comes with a 1000W high frequency ballast which helps control the output of the grow light. DOES NOT