{"product_id":"evo-nexus-220-filtration-system","title":"Evo Nexus 220 Filtration System Advanced Mechanical Biological Filter","description":"\u003cp\u003e\u003cspan style=\"color: #000000\"\u003eThe Evo Nexus 220 Filtration System delivers crystal-clear water and exceptional biological treatment for your pond. Designed as part of the award-winning Nexus range, this advanced filtration system combines both mechanical and biological filtration into one easy-to-install, easy-to-clean unit. The system features a redesigned Eazy Filter with the innovative K1 Micro filter media in a static bed, ensuring improved mechanical filtration and the effective removal of fine particles from the water.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #000000\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #000000\"\u003eThe outer chamber houses the K1 Media moving bed, which supports diverse strains of beneficial bacteria and filter feeders that convert harmful Ammonia and Nitrite into harmless Nitrate. This dual-stage filtration ensures healthy water for your koi, goldfish, and other ornamental pond fish. Suitable for pump-fed or gravity-fed setups, the Evo Nexus 220 Filtration System supports ponds up to 18,000 litres (4,000 gallons), while the Nexus 320 handles up to 34,000 litres (7,500 gallons).\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #000000\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #000000\"\u003eInstallation is straightforward: the filter must sit on a solid, level base of at least 1.2 x 1 metre. Pump-fed setups use a pump to supply water to the filter, while gravity-fed setups rely on the pond’s water level. Recommended air pumps for optimal biological function are Air Pump 75 for Nexus 220 and Air Pump 95 for Nexus 320.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #000000\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"color: #000000\"\u003eAll Evo Nexus 220 Filtration Systems ship directly from the supplier, with typical delivery within 3–5 working days. This makes it a reliable and convenient choice for pond owners seeking superior water clarity, scalable biological filtration, and safe, healthy conditions for koi and ornamental fish.\u003c\/span\u003e\u003c\/p\u003e","brand":"Evolution Aqua","offers":[{"title":"Nexus 220","offer_id":56733163061622,"sku":"NEXUS220","price":1445.0,"currency_code":"GBP","in_stock":true},{"title":"Nexus 220 - Lid","offer_id":56733163094390,"sku":"LID200","price":132.95,"currency_code":"GBP","in_stock":true},{"title":"Nexus Automatic Cleaning System - Gravity Fed","offer_id":56733163127158,"sku":"NEXUSAUTO220G","price":694.95,"currency_code":"GBP","in_stock":true},{"title":"Nexus Automatic Cleaning System - Pump Fed","offer_id":56733163159926,"sku":"NEXUSAUTO320P","price":620.95,"currency_code":"GBP","in_stock":true},{"title":"Nexus Waste Pipe Kit","offer_id":56733163192694,"sku":"WASTEPIPEKIT","price":25.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/9238\/5910\/files\/1619602639-45869600_074537fa-55f2-4021-9893-3b4bf65bcc71.png?v=1780218800","url":"https:\/\/www.queni-koi.co.uk\/products\/evo-nexus-220-filtration-system","provider":"Queni Koi Southern","version":"1.0","type":"link"}