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Evolution Aqua Nexus Filtration Systems

Advanced filtration systems for Koi ponds now with NEW K+ Media

Building on the tried and tested technology that has been 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 220+ and Nexus 320+ filters now come with a new filter media called K+ Media in the moving bed outer chamber for vastly improved biological filtration and faster filter maturation. The new Nexus+ filters are now supplied "auto ready", with factory fitted fixings already in place, making it even easier to upgrade to the Nexus Automatic Cleaning System.

How the Nexus Works

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. Water then passes through the grills in the stainless steel “Eazy” filter, where the finer particles are removed by the static bed K1 Micro® filter media. The clean water then passes to the outside chamber of the Nexus for biological treatment before returning to the pond. At this stage, biological breakdown occurs through different strains of bacteria and filter feeders living on the protected surface area of each K1+ Media filer. The bacteria convert Ammonia and Nitrite into less harmful Nitrate. Water then passes through the exit grill into the outlet and returns to the pond.

Evolution Aqua Nexus Filtration Systems

Evolution Aqua Nexus Filtration Systems

  Icons SKU Max Pond Size Max Flow Rate Volume of Water in Nexus Volume of Water in Inner Chamber Volume of Water in Outer Chamber
NEXEAZ220
4,800 gal
2,640 GPH
134.72 Gal
27.73 Gal
106.99 Gal
NEXEAZ320
9,000 gal
3,431 GPH
221.90 Gal
54.15 Gal
167.74 Gal

Continuing our long standing reputation for innovation, the Nexus Automatic System now enables Nexus owners to benefit from a fully automated cleaning cycle

Physically turning ball valves and manually switching pumps on and off will now be a thing of the past thanks to the Nexus Automatic System. All of the key processes that form the cleaning cycle are now controlled automatically with this easy to install kit.

    Key Features
  • Hassle free way to clean Nexus filtration systems
  • Automates the cleaning process of the Nexus
  • Easily fits onto Nexus filters (post 2006 models)
  • Electronic control box automatically operates valves and pumps
  • Adjustable timer controls the frequency of the automatic cleaning cycle to suit the user’s needs
  • Easy to set up for multiple cleaning cycles
  • Manual cleaning cycle can be carried out if needed, at the touch of a button
  • GRAVITY and PUMP FED versions available
Evolution Aqua Nexus Automatic Systems

Evolution Aqua Nexus Automatic Systems

  Icons SKU
NEXUSAUTO320P
NEXUSAUTO220G
NEXUSAUTO320G

This kit upgrades the mechanical filter from an EAZY with K1 Media to an EAZY with K1 Micro

If you have a Nexus 200 / 210 or 300 / 310 filter manufactured between 2006 and 2014 you are able to upgrade the inner chamber to allow you to install the EAZY Type 3 filter, (as used in the Nexus 220 and Nexus 320).

To further identify your Nexus, it will not have a stepped section moulded into the outlet or either the Answer or sponges as the primary mechanical filter. Instead, the body of the Nexus will feature the wider outlet and it will be fitted with an EAZY filter.

Evolution Aqua Nexus Accessories

Evolution Aqua Nexus Accessories

  Icons SKU
EAZYUG220
EAZYUG320
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