Evolution Aqua Nexus 220+ – Advanced Pond Filtration for Ponds up to 18,000 Litres
The Evolution Aqua Nexus 220+ is a high-performance, low-maintenance biological and mechanical pond filter system, specially designed for ponds up to 18,000 litres (4,000 gallons). Compact yet powerful, the Nexus 220+ is ideal for koi ponds, ornamental garden ponds, and fishkeeping enthusiasts who demand clear, healthy water with minimal cleaning effort.
This upgraded “+” model comes Auto Ready, with factory-fitted fixings to support the Nexus Automatic Cleaning System (sold separately). It includes Evolution Aqua’s trusted Eazy™ mechanical filtration chamber filled with K1 Micro Media, and an outer bio chamber containing the latest K+ Media for biological filtration.
Together, they offer fine particle removal, nitrification of harmful ammonia and nitrites, and a straightforward cleaning process, making the Nexus 220+ one of the most efficient and user-friendly filters on the market.
Key Features:
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For ponds up to 18,000L (4,000 gal) – Perfect for medium koi ponds or fish ponds
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Dual-Chamber Design – Eazy™ mechanical filter + K+ Media moving bed biofilter
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Auto-Ready – Compatible with the Nexus Automatic Cleaning System
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Filled with K1 Micro & K+ Media – Powerful mechanical and biological filtration
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Low-maintenance cleaning – Backflush via air-assisted agitation and waste valve
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Flexible installation – Supports gravity-fed and pump-fed configurations
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Energy efficient – Laminar flow design for reduced pump strain
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Made in the UK – Trusted performance from Evolution Aqua
Specifications:
| Feature | Specification |
|---|---|
| Max Pond Volume | 18,000 litres (4,000 gallons) |
| Max Flow Rate | 10,000 LPH (recommended: 6,000 LPH) |
| Filter Volume | Approx. 510 litres total |
| Inner Chamber Media | K1 Micro (mechanical) |
| Outer Chamber Media | K+ Media (biological) |
| Cleaning System | Manual or optional automatic upgrade |
| Dimensions | ~1.03m (H) x 1.14m (Dia.) |
| Installation | Pump-fed or gravity-fed setups |
How It Works:
Water enters the Eazy chamber, where K1 Micro Media traps fine solids and debris. It then flows into the outer bio chamber, where K+ Media provides massive surface area for beneficial bacteria to break down ammonia and nitrite. Cleaning is simple: agitate the inner media using an air pump and flush waste with the included drain valve—no disassembly required. Add the Nexus Auto Kit for hands-free scheduled cleanings.
Ideal For:
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Small to medium-sized koi ponds and ornamental ponds
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Pond keepers who want crystal-clear, healthy water with low maintenance
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Systems already using drum filters, UV clarifiers, or bottom drains
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Users planning future upgrades with the Auto Cleaning System
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