The job of  UVC clarifier in pond is to keep the water clean and clear enough for the fish. Floating algae can build up on the surface of the water and can become unsightly. 

This UV-C filter eliminates green algae in pond water and provides a healthy environment for fish and plants. 

High Power 9 Watt UV-C Product Features: 

• Suitable for Ponds (Plant): 4500L
• Suitable for Ponds (Koi): 2250L
• Recommended Pump: 5000 LPH ( The pump is purchased separately )
• Hose details Provided: 2 x 15/20/25 + 2 x 32mm
• Compact unit with 5 Metres of cable

According to your pond sizes , 9 w /11w /18 w are available at our store for you to choose.