![VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement](https://m.media-amazon.com/images/I/71F87QrucEL.jpg)
VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement
![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 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](https://m.media-amazon.com/images/I/71HpT-ocMhL._AC_UF894,1000_QL80_.jpg)
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
![VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement](https://m.media-amazon.com/images/I/71peR8h2sZL.jpg)
VIVOSUN 1000 Watt UL Listed Dimmable Electronic Digital Ballast for MH HPS Grow Light Bulb Lamp : Amazon.ca: Tools & Home Improvement
![Ace Electronic Digital Ballast 400/600/1000 Watt MH/ HPS 1YR- LightEng – Garden Effects -Indoor and Outdoor Gardening Supplies Ace Electronic Digital Ballast 400/600/1000 Watt MH/ HPS 1YR- LightEng – Garden Effects -Indoor and Outdoor Gardening Supplies](http://gardenfx.ca/cdn/shop/products/d-17531-05_1200x1200.jpg?v=1527632473)