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SunStream 600W Digital Dimmable Electronic Ballast for HPS/MH Grow Lights Fixture, 8 FT Power Cord Included - Efficient and Reliable Indoor Plant Growth : Amazon.ca: Tools & Home Improvement
iPower 600W Digital Dimmable Electronic Ballast, HPS MH Grow Light for Horticulture and Hydroponics, 1 Pack, Black : Amazon.ca: Patio, Lawn & Garden
Quantum 600W Digital Ballast | Early's Farm & Garden Centre
Lightspeed Digital 600W Ballast Dimmable MH HPS – Greencorner.ca
Hydroponic Supplies Nanolux Dimmable Digital Ballast Grow Store
600W Electronic Dimmable HPS MH Grow Light Ballast 600 Watt Digital 120/240V UL - Newegg.ca
Tonka 600W SE 120/240V Electronic Ballast – Mr. Fertilizer
Spectromaster Dimerabile Digital Ballast 600W Spectromaster 600w Digital Ballast | Products \ Power Supplies Products \ Power Supplies | Maxgrowshop.com