Keeping pond water crystal clear and healthy for fish is the dream of every pond owner. One of the most trusted systems for achieving this is the Evolution Aqua Nexus Filter Guide. Known for its reliability, efficiency, and innovative design, the Nexus Filter has become a go-to solution for koi pond enthusiasts and hobbyists alike. This guide will break down everything you need to know about the Nexus Filter — from how it works to installation tips and maintenance best practices.
What is the Evolution Aqua Nexus Filter?
The Nexus Filter is a biological and mechanical pond filtration system designed by Evolution Aqua, a well-known UK-based company that specializes in pond filtration technologies. The Nexus is a versatile, gravity-fed or pump-fed filter that uses a central chamber (the inner chamber) for mechanical filtration and an outer chamber for biological filtration. This dual-chamber design ensures a high level of water clarity and quality.
The heart of the Nexus system is its K1 Micro filter media — a buoyant, moving bed filter media that provides a massive surface area for beneficial bacteria to colonize. These bacteria break down harmful ammonia and nitrites in the water, creating a safe environment for fish.
How Does the Nexus Filter Work?
Water enters the central chamber through the inlet, where it passes through a stainless steel screen that catches large debris and waste. As the water moves into the outer chamber, it interacts with the K1 Micro media, which is constantly agitated by an air pump. This movement promotes the growth of nitrifying bacteria that biologically clean the water.
After biological filtration, the water flows out through an outlet pipe, clean and ready to re-enter the pond. This combination of mechanical and biological filtration is what makes the Nexus Filter so effective.
Advantages of the Nexus Filter System
- Easy Maintenance: With the Eazy cleaning system, you can clean the filter without removing media or stopping your pump.
- Scalability: Available in various models (Nexus 220+, Nexus 320+), suitable for small to large ponds.
- Energy Efficient: The moving bed system requires minimal energy, making it cost-effective in the long run.
- Excellent Filtration: The large surface area of K1 Micro ensures efficient biological processing of waste.
- Durable Construction: Made with high-quality materials for longevity and reliability in outdoor settings.
Installation Tips
- Choose the Right Model: Match the Nexus model with your pond size and fish load.
- Ensure Level Ground: The filter must be placed on a flat, solid base for proper operation.
- Proper Flow Rate: Maintain recommended flow rates (typically 10,000–13,000 liters/hour) for optimal performance.
- Pump or Gravity Feed: Decide early if your system will be pump-fed or gravity-fed and follow the correct installation instructions accordingly.
Maintenance and Cleaning
Cleaning the Nexus Filter is straightforward, thanks to its Eazy system:
- Turn off the pump.
- Close valves to isolate the filter.
- Turn on the air to agitate the K1 Micro media.
- Open the waste valve to discharge dirty water.
- Repeat if necessary, then restart the system.
Conclusion
Whether you’re a seasoned koi keeper or just starting your pond journey, the Evolution Aqua Nexus Filter offers a reliable and efficient solution for maintaining clear, healthy water. With its intelligent design and easy maintenance, it’s an investment that pays off in the long run.
