Evolution Aqua Nexus 320+

Evolution Aqua Nexus 320+ Pond Filter

High-Performance Filtration for Large Koi & Garden Ponds

The Nexus 320+ is the flagship pond filter from Evolution Aqua, designed for larger ponds and serious koi enthusiasts. It builds on the proven success of the Nexus filtration system and takes performance to the next level with the integration of K+Media — an advanced biological media engineered to accelerate filter maturation, enhance biological activity, and maintain crystal-clear water quality.

Ideal for ponds up to 34,000 litres (7,500 gallons), the Nexus 320+ incorporates K+Media in the outer moving bed chamber. With a total surface area of 1,350m² per m³ and 1,025m² per m³ of protected surface area, it supports the growth of a rich biofilm while ensuring long-lasting, effective filtration. Added minerals, calcium, magnesium, salt, and enzymes further accelerate beneficial bacterial development for superior pond health.

Fully Auto-Ready, the Nexus 320+ comes with factory-installed fixings for an effortless upgrade to the Nexus Automatic Cleaning System, streamlining maintenance and saving time.

Key Features

• Designed for ponds up to 34,000 litres (7,500 gallons)
• Combines mechanical and biological filtration in a compact and efficient system
• Supplied with 100L of K+Media for superior biological performance
• Auto-Ready: Pre-installed fixings for easy upgrade to Nexus Automatic System
• Manufactured in the UK by Evolution Aqua, an award-winning aquatics brand
• Ideal for serious koi keepers and large garden ponds

Included Components

• Nexus 320+ Filter Unit
• Lid (SKU: LID300)
• AirTech 95L Air Pump (SKU: AIRPUMP95)
• Waste Pipe Kit (SKU: WASTEPIPEKIT)

Technical Specifications

• Maximum Pond Size: 34,000 litres / 7,500 gallons
• 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 Capacity for K+Media: 300 litres

Whether you’re upgrading an existing pond or building your dream koi setup, the Nexus 320+ delivers unmatched water clarity, biological performance, and ease of use—trusted by pond professionals and hobbyists worldwide.