POWERFUL AND DURABLE: This UVC light is designed to optimize water filtration systems in ponds, pools, and similar environments, improving water purification efficiency. Featuring a high-transmission quartz tube and G23 base, it offers a long lifespan of up to 8,000 hours, providing a reliable solution for continuous use. SAFETY FIRST: Ozone-free design helps maintain clean water quality in ponds and filtration systems. Proper disposal at end of life is recommended to minimize environmental impact. EASY TO USE: Always power off the device before installing or replacing the UV bulb to avoid electrical hazards. Insert the bulb into the designated socket following proper installation procedures to ensure integrity. Compatible with inductive ballasts only; not suitable for electronic ballasts. VERSATILE APPLICATION: Designed for easy installation and portability, this UV lamp fits various applications requiring a G23 base, 13W lamp, and inductive ballast, ensuring reliable performance in compatible systems. EXTENSIVE COMPATIBILITY: Works with a range of pond and fountain filters, including various GPH pond filters using 13-watt UV lights, delivering consistent water purification. Color: As Shown Material: Glass Package Contents: 2 x 13W UV-C Replacement Bulb