Electronic Ballast Guaranteed to Work with Tetra - PL-S7W Pond Water Treatment Germicidal UV Light Bulb Model_PT20 99 inches and gives you

99 inches and gives you a worry-free performance for an entire year

18 inches light bulb that has ceramic as its base material

Pictor 100mm

The bulb is strong enough regardless of whether you use the Upstream Water Unit in residential or commercial locations

Electronic Ballast Guaranteed to Work with Tetra - PL-S7W Pond Water Treatment Germicidal UV Light Bulb Model_PT20 99 inches and gives youUV 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