Tetra Pond Bio-Active UV Pressure Filter Pond Filters - 4000 GPH

• Provides mechanical and biological filtration to help maintain clear and healthy pond water.
• Its unique open profile bio-activators provide large surface area and unrestriced water flow to all surfaces for improved cle
• It is designed with an easy backflush valve for fast cleaning.
• Ultra-Violet Clarifier that provides permanent control of suspended algae which cause green water.