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The Evolution Aqua Nexus 320+ provides an advanced filtration system for Koi ponds. Building on the tried and tested technology that has been ever present in the world renowned Nexus, the team at Evolution Aqua have gone even further to enhance their number one Koi pond filter.

The Nexus 320+ filters now come supplied with the new K+ Advanced Floating Filter Media in the moving bed outer chamber for vastly improved biological filtration and faster filter maturation. The new Nexus+ filters are also supplied “auto ready”, with factory fitted fixings already in place, making it even easier to upgrade to the Nexus Automatic Cleaning System.


Availability: Out of stock


The Nexus+ filter is an innovative biological and mechanical filter system in one. Water from the pond enters the Nexus+ via the inlet into the inner chamber which works as a vortex allowing larger solids to settle out. The water then passes through the Eazy filter, where finer particles are removed at the mechanical stage of filtration, thanks to the static bed of K1 Micro filter media.

The mechanically clean water then passes to the outside chamber of the Nexus+ where the new K+ Advanced Filter Media moving bed is located for biological treatment prior to being returned to the pond. At this stage, biological breakdown occurs through different strains of bacteria and filter feeders living on the vast protected surface area of each piece of the K+ Advanced Filter Media. These bacteria convert Ammonia and Nitrite into less harmful Nitrate. Water then passes through the exit grill into the outlet, returning back to the pond.

  • Advanced filtration for koi ponds
  • Now supplied with K+ Advanced Floating Filter Media
  • Factory fitted with fixings for optional Nexus Automatic Cleaning System upgrade
  • Maximum pond size: 34,000 litres 
  • Recommended flow rate: 11,000 litres per hour
  • Maximum flow rate: 13,000 litres per hour
  • Volume of water in Nexus: 840 litres Amount of K1 Micro in EAZY: 20 litres
  • Amount of K+ Media supplied: 100 litres
  • Maximum amount of K+ Media: 300 litres


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Pondmax Australia - Living Ponds

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