High-Performance Filtration for Koi Ponds: Evolution Aqua Nexus and Oase ProfiClear Systems Compared

A healthy koi pond is not just a source of visual joy—it’s a delicate ecosystem that demands premium filtration. Whether you're maintaining a hobbyist setup or a professional koi pond, having the right filter system is critical to water clarity, fish health, and overall pond balance.

At Beacon Koi Ltd, we provide cutting-edge filtration solutions from trusted brands like Evolution Aqua and Oase. In this blog, we’ll explore four top-tier options for koi keepers: the Evolution Aqua Nexus 220+, Evolution Aqua Nexus Filter, Proficlear Premium Compact-L Gravity EGC, and ProfiClear Premium Compact-M Gravity EGC.

Let’s dive into what makes each of these systems unique—and which might be best suited for your pond’s size, setup, and stocking levels.

Evolution Aqua Nexus 220+: Advanced Filtration for Mid to Large Ponds

The Evolution Aqua Nexus 220+ is a flagship model designed for koi ponds up to 18,000 liters (depending on stocking density). It combines mechanical and biological filtration in one compact unit and is highly efficient for both gravity-fed and pump-fed systems.

Top Features:

Uses K+ media for superior biological filtration

Easy-cleaning central chamber system

Simple installation with versatile plumbing options

Supports high fish loads with reliable ammonia/nitrite removal

The Nexus 220+ is ideal for koi keepers seeking clarity, efficiency, and low-maintenance operation. It’s one of the most trusted names in UK koi pond filtration—and for good reason.

Evolution Aqua Nexus Filter: Trusted by Koi Professionals

Beyond the 220+, the Evolution Aqua Nexus Filter line (including the 320+ model) offers scalable solutions for larger ponds and more demanding environments. These filters deliver unmatched biological performance thanks to K+ media, which promotes the growth of beneficial bacteria.

Why Choose the Nexus Filter Series?

Excellent bio-filtration with large surface area media

Unique central cleaning mechanism for easy waste removal

Compatible with drum filters or UV clarifiers

Used by professionals and enthusiasts alike across the UK

Whether you're just starting with koi or upgrading an existing setup, the Nexus range offers the reliability and water quality needed to maintain a thriving aquatic environment.

ProfiClear Premium Compact-L Gravity EGC: Intelligent Filtration from Oase

Moving into high-end automation and smart technology, the Proficlear Premium Compact-L Gravity EGC from Oase represents the next evolution in pond filtration. This filter is equipped with Easy Garden Control (EGC) technology, allowing users to monitor and adjust settings directly from a smartphone or tablet.

Key Benefits:

EGC interface for smart monitoring and operation

Integrated drum filter and moving bed bio filtration

Extremely energy-efficient pump control

Self-cleaning system for hands-off maintenance

Designed for larger koi ponds and heavily stocked environments, the Compact-L is a serious tool for serious pond keepers who want performance and automation in one sleek system.

ProfiClear Premium Compact-M Gravity EGC: Smart, Scalable, and Compact

If you're working with slightly less space or a mid-sized pond, the ProfiClear Premium Compact-M Gravity EGC is a streamlined alternative that still offers powerful performance. Like its larger sibling, it includes EGC integration and a drum filtration system.

Ideal For:

Ponds up to approx. 30,000 liters

Owners who want minimal cleaning and maximum clarity

Tech-savvy pond keepers using the EGC system

Users looking to combine with additional Oase modules (e.g., UV-C, bio chambers)

This unit is a go-to solution when pond owners want a premium filter system without the footprint of larger equipment.

Why Beacon Koi Ltd is Your Trusted Pond Filtration Partner

At Beacon Koi Ltd, we understand that koi keeping isn’t just a hobby—it’s a lifestyle. We proudly supply Evolution Aqua Nexus Filters and Oase ProfiClear systems, along with expert advice, installation support, and high-quality accessories.

Why choose us?

Trusted stockist of premium filtration brands

Technical support for setup and maintenance

Convenient UK-wide delivery

Friendly advice from koi specialists

Whether you’re running a small backyard pond or a large-scale koi installation, we have the tools and products to help your fish thrive.

Final Thoughts

When it comes to koi pond filtration, quality matters. Whether you opt for the reliable Evolution Aqua Nexus 220+, the tech-smart ProfiClear Premium Compact-L Gravity EGC, or the versatile Compact-M, investing in the right system pays off with clearer water, healthier koi, and less time spent on maintenance.