When should I replace the UV bulb in my EasyPro PCU35W Pro-Clear UV Clarifier for best results

[DeKing]

For peak performance, replace the UV bulb in your EasyPro PCU35W Pro-Clear UV Ultra Stainless Steel Ultraviolet Clarifier every year. The manufacturer recommends changing the bulb after 9000 hours of use. While the bulb may still emit light beyond this timeframe, its ability to effectively clarify your pond water decreases. Annual replacement ensures the UV clarifier continues to inhibit algae growth and maintain a clear, healthy pond environment.