Description:
The Nexus 220+ represents the latest advancement in Evolution Aqua's renowned filtration technology, engineered to deliver crystal-clear water for thriving koi and pond fish. This dual-chamber system combines biological and mechanical filtration in one robust unit. Water enters through the inlet chamber where a vortex action settles larger solids, then passes through mechanical filtration before reaching the outer chamber for biological treatment using the advanced K+ Media moving bed system.
The K+ Media is the standout innovation. With a class-leading surface area of 1,350m² per m³ and protected surface area of 1,025m² per m³, it accelerates filter maturation significantly. Minerals, magnesium, calcium, salt and enzymes are incorporated during extrusion to establish stable biofilm faster than traditional media, reducing the time needed to cycle your filter.
Built in the UK using precision rotational moulding, the Nexus 220+ features a robust high-density polyethylene shell with stainless steel internals. Pre-installed fixings make upgrading to the automatic cleaning system straightforward—the filter can run and clean itself even when you're away.
Suitable for ponds up to 18,000 litres (4,000 gallons), the Nexus 220+ works with both gravity-fed and pump-fed systems. An air pump is essential for the cleaning cycle; a variable pump provides superior flow control and energy efficiency.
Flexible payment available at 0% APR with Klarna.