Pond BIO 8W UV FILTER # 3 (7,500L)

The Pond Medic Bio UV Filter provides a great way to control unwanted single cell algae and parasites. They work by killing floating algae using a ultraviolet light at 260 nanometers.
Regular pond UV filters can be submerged in water where sterilizers cannot. Giving you clean, clear, pristine, and safe water.