Koi & freshwater pond UVC (ultra violet clarifiers) are devices that use ultraviolet light to kill algae and other harmful microorganisms in a koi pond. The UVC clarifier can be installed in the pond's filtration system and works by exposing the water to ultraviolet light, which kills the algae and other microorganisms. This helps to keep the water clear and healthy for the koi fish. UVC clarifiers are an important part of maintaining a healthy koi pond and are often used in conjunction with other filtration systems such as biological filters and mechanical filters.
Osram 18 watt UVC replacement bulb (EazyPod)
Osram UV Replacement bulb 15watt, 25watt, 30watt, 55watt Direct replacement for all Evolution aqua evouv. Will fit other uv units.
Phillips PL-S UVLamp Replacement bulb for UV Units. 9Watt 11Watt