Evolution Aqua Nexus 220 – Advanced Pond Filtration for Ponds up to 18,000 Litres The Evolution Aqua Nexus 220 is a high-performance, low-maintenance biological and mechanical pond filter system, specially designed for ponds up to 18,000 litres (4,000 gallons). Compact yet powerful, the Nexus 220 is ideal for koi ponds, ornamental garden ponds, and fishkeeping enthusiasts who demand clear, healthy water with minimal cleaning effort. This upgraded “ ” model comes Auto Ready, with factory-fitted fixings to support the Nexus Automatic Cleaning System (sold separately). It includes Evolution Aqua’s trusted Eazy™ mechanical filtration chamber filled with K1 Micro Media, and an outer bio chamber containing the latest K Media for biological filtration. Together, they offer fine particle removal, nitrification of harmful ammonia and nitrites, and a straightforward cleaning process, making the Nexus 220 one of the most efficient and user-friendly filters on the market. Key Features: For ponds up to 18,000L (4,000 gal) – Perfect for medium koi ponds or fish ponds Dual-Chamber Design – Eazy™ mechanical filter K Media moving bed biofilter Auto-Ready – Compatible with the Nexus Automatic Cleaning System Filled with K1 Micro & K Media – Powerful mechanical and biological filtration Low-maintenance cleaning – Backflush via air-assisted agitation and waste valve Flexible installation – Supports gravity-fed and pump-fed configurations Energy efficient – Laminar flow design for reduced pump strain Made in the UK – Trusted performance from Evolution Aqua Specifications: Feature Specification Max Pond Volume 18,000 litres (4,000 gallons) Max Flow Rate 10,000 LPH (recommended: 6,000 LPH) Filter Volume Approx. 510 litres total Inner Chamber Media K1 Micro (mechanical) Outer Chamber Media K Media (biological) Cleaning System Manual or optional automatic upgrade Dimensions ~1.03m (H) x 1.14m (Dia.) Installation Pump-fed or gravity-fed setups How It Works: Water enters the Eazy chamber, where K1 Micro Media traps fine solids and debris. It then flows into the outer bio chamber, where K Media provides massive surface area for beneficial bacteria to break down ammonia and nitrite. Cleaning is simple: agitate the inner media using an air pump and flush waste with the included drain valve—no disassembly required. Add the Nexus Auto Kit for hands-free scheduled cleanings. Ideal For: Small to medium-sized koi ponds and ornamental ponds Pond keepers who want crystal-clear, healthy water with low maintenance Systems already using drum filters, UV clarifiers, or bottom drains Users planning future upgrades with the Auto Cleaning System
