How often does the UV bulb need replacement in the EasyPro PCU35W Pro-Clear UV Clarifier?

[DelLevi]

To ensure your EasyPro PCU35W Pro-Clear UV Ultra Stainless Steel Ultraviolet Clarifier continues to perform at its best, plan to replace the UV bulb annually. The manufacturer recommends changing the bulb after 9000 hours of continuous use. While the bulb may still emit light beyond this timeframe, its effectiveness in controlling algae diminishes over time. Replacing the UV bulb yearly helps maintain the clarifier's ability to keep your pond water clear and healthy.