Regular maintenance of UV clarifiers involves replacing bulbs and other components to ensure optimal performance. Manufacturers like Anjon, Aquascape, EasyPro, Oase, PondMaster, and Savio offer specific replacement parts and bulbs compatible with their units. For example, Anjon provides replacement bulbs for their SuperNova series, while Savio offers genuine replacement bulbs for their UVinex systems. It's crucial to use manufacturer-recommended parts to maintain the efficiency and longevity of your UV clarifier.