Amazon.com: RONAQUA 100-120V 55W Electronic Ballast for 12GPM UV Water Sterilizer with Four Prong Connection to Lamp and Green/Red Indicator Light : Patio, Lawn & Garden
HQUA-TWS-5595EB 110-120V 40-90W Electronic Ballast Only fit for HQUA-TWS-12 UV
Electronic Ballast for High UV Lamps Preheat Start Ballast - China UV Sterilization Tube Ballast and High Output Ballast