EnergyStation – 1,000 Watt Cali Ballast by Plantmax Dimmable Ballast for hydroponic, Indoor Grow. Grow System for Indoor Grow, hydroponic, Horticulture, Personal Growing : Amazon.ca: Tools & Home Improvement
Calitek - Top Prix - Pack HPS 400W - Ballast electronique
Electronic ballast CMH/MH/HPS CK600W V3 - Calitek
EnergyStation – 1000W DE PRO Ballast 240/277V – Allstate Garden Supply