Electronic Ballast Guaranteed to Work with Aquanetics - Q720IL UV Light Bulb for Germicidal Water Treatment TUV PL-L36W One is an Ozone producing

One is an Ozone producing bulb (this one) and the other is an Ultraviolet bulb for the Airmaster

1 UV Ballast for GPH450T5L/4P Germicidal UV light bulb (single lamp) provides a low-maintenance

7 nm quartz glass used does not produce potentially harmful ozone

and photolithography processes requiring reliable UVA performance

2" total length

Electronic Ballast Guaranteed to Work with Aquanetics - Q720IL UV Light Bulb for Germicidal Water Treatment TUV PL-L36W One is an Ozone producingUV ballast guaranteed to work with your UV germicidal system Features: Guaranteed to work with your UV Germicidal Bulb. Comes complete with wiring diagram necessary to run your bulb(s) Industry leading 5 YEAR WARRANTY UL Listed Ballasts can be complicated. Nobody replaces ballasts regularly. Inevitably, ballasts are needed when you go to change out the UV bulb at your machine's recommended intervals when you realize that the new bulb is not lighting