Evolution Aqua K Advanced Filter 20″ – Premium Pressure Filter for Ponds up to 18,000 L The Evolution Aqua K Advanced Filter 20″ combines robust UK-made construction with advanced K Media to deliver exceptional mechanical and biological filtration for ponds up to 18,000 litres (4,800 US gal). This compact (500 mm diameter) filter is engineered for efficiency, durability, and easy maintenance, making it ideal for koi ponds, garden ponds, and heavily stocked water features. Key Features: Suitable for ponds up to 18,000 L (4,800 US gal) Pre-filled with 50 L K Media – offering ~1,025 m² per m³ surface area for rapid bacterial colonization and filtration to 1 micron. Optimum flow rate: 6,000 LPH – ensures sufficient turn‑over while minimizing pump load. Pressure-rated to 1.5 bar (tested to 2.5 bar); robust single-piece rotational moulded body with integrated feet for long-term reliability. Laminar flow, double laterals, and included air blower pipework – for efficient backwashing and easy operation. Compact grey finish – blends with modern pond setups and matches other Evolution Aqua equipment. How It Works Water enters via the multiport valve into bottom laterals, flows upward through the K Media where debris is trapped and beneficial bacteria flourish. Clean water exits via top laterals. When it’s time to clean, simply switch the valve and use the air blower to backwash—no messy disassembly required. Specifications Specification Detail Max Pond Capacity 18,000 L (4,800 US gal) Optimum Flow Rate 6,000 LPH (1,320 GPH) Media Volume 50 L K Media Filtration Precision 1 micron Working Pressure 1.5 bar (tested to 2.5 bar) Valve Size 1½″ multi-port valve Body Diameter 20″ (500 mm) Construction Single-piece rotational-moulded body Why Choose the K Advanced Filter 20″? High-performance filtration in a compact, all-in-one unit Energy-efficient design thanks to laminar flow and low-pressure operation. Built to last with pressure-tested, seamless construction Effortless maintenance with included pipework and air blower Unmatched biological capacity thanks to high-surface-area K Media
