HID Hut brings Dual Arc bulb technology to the grower. A dual arc bulb incorporates a 400W MH and a 600W HPS arc tube in one bulb, that runs on a single 1000W HPS Ballast. By combining lamp types in one bulb, the grower achieves the most balanced light spectrum available from any bulb. With an initial output of 110,000 Lumens, this bulb is easily a match for any H.P.S. bulb on the market. If you would like to maximize the potential of your plants, this is the bulb for you!