Pond Medic Bio UV Filter - No.1, 3000L/8W

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.