SunStream 1000 Watt Dimmable Digital Electronic Ballast for MH and HPS Grow Light ETL Listed and 8 FT Power Cord (Full Version) : Amazon.ca: Tools & Home Improvement
Ace Electronic Digital Ballast 400/600/1000 Watt MH/ HPS 1YR- LightEng – Garden Effects -Indoor and Outdoor Gardening Supplies