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 provides reliable performance with a long lifespan of up to 8,000 hours, offering a cost-effective 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 prevent electrical hazards. Insert the bulb into the designated socket using the correct procedure, ensuring the UV tube remains intact. Compatible with inductive ballasts only; not suitable for devices with electronic ballasts. VERSATILE APPLICATION: Designed for adaptability and ease of installation, this UV lamp is suitable for various settings. Specifically engineered for lighting systems with G23 base, 13W lamps, and inductive ballasts to ensure optimal performance. EXTENSIVE COMPATIBILITY: Works with a variety of pond and fountain filters, including different GPH pond filters requiring a 13-watt UV light, delivering consistent water purification. Color: As Shown Material: Glass Package Contents: 2 x 13W UV-C Replacement Bulb