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
UV Ballast for GPH287T5L Germicidal UV Light Bulb - Single
Electronic Ballasts - Infralight
Realgoal UV Ballast for 55W PHILIPS Lamp - Amazon.com
Sterilaire Electronic Ballast Replacement for UV Lamp 20000500
BALLAST FOR 3" or 5" Diameter - Amalgam Germicidal UV - 55, 90, 120 Wa - Lifegard Aquatics