Evolution Aqua Nexus 320+ EAZY Pond Filter with K+ Media 9,000 Gallons

Crystal-Clear Water With the Evolution Aqua Nexus 320+ EAZY Pond Filter

Tired of murky water and constant scrubbing that steals time away from actually enjoying your pond? The Nexus 320+ EAZY tackles the problem at its source, pulling out solids and converting harmful waste before your fish ever feel the strain. Sized for ponds up to 9,000 gallons, it pairs mechanical trapping with a living bacterial bed so your water stays clear and your ecosystem stays balanced, all with far less hands-on effort from you.

• Pond Size: Filters ponds up to 9,000 gallons.
• Flow Rate: Handles up to 3,431 gallons per hour for properly timed cleaning.
• Two-Stage Cleaning: Combines a vortex chamber and K1 Micro media for mechanical trapping with a K+Media Moving Bed for biological treatment.
• Water Clarity: Removes fine solids so pond water stays clear.
• Fish Safety: Beneficial bacteria convert Ammonia and Nitrite into less harmful Nitrate.
• Media Included: Ships with 20 liters of K1 Micro and 100 liters of K+Media, expandable to 300 liters.
• Easy Cleanout: Large 1.5 inch waste valve flushes debris without disassembly.
• Simple Servicing: 3/4 inch maintenance valve and 12mm air valves keep upkeep quick.
• Time Saved: Continuous filtration cycle reduces manual scrubbing and maintenance.

How the Nexus+ Filter System Works

The filter runs a full cleaning cycle in a single, sealed unit. Here's the path your water takes:

• Vortex Chamber: Pond water enters through the inlet and swirls into the inner chamber, where larger solids settle out instead of clogging the rest of the system.
• Eazy Filter: Water passes through a static bed of K1 Micro filter media, trapping finer particles for genuinely clear results.
• Biological Treatment: The mechanically cleaned water moves to the outer chamber and the K+Media Moving Bed, home to bacteria and filter feeders that convert Ammonia and Nitrite into less harmful Nitrate.
• Return to the Pond: Treated water exits through the return grill, feeding a continuous loop of clean, healthy water. An overflow bypass in the exit chamber safeguards flow should the system ever back up.

Each stage handles a distinct job, so nothing gets overloaded and every drop that returns to your pond has been through the complete process.

The Eazy Filter and K+ Media Moving Bed Explained

The Nexus 320+ EAZY earns its name from the Eazy filter at its core. The static K1 Micro bed sits inside the inner chamber and does the heavy lifting on mechanical trapping, while a large 1.5 inch waste valve lets you flush captured debris out quickly without pulling the system apart.

In the outer chamber, the K+Media Moving Bed is where biology takes over. The media constantly tumbles in the water, giving colonies of beneficial bacteria a huge, protected surface to grow on. That living population is what keeps toxic Ammonia and Nitrite in check, protecting your fish day and night.

• K1 Micro in the EAZY: 20 liters
• K+Media supplied: 100 liters
• Maximum K+Media capacity: 300 liters (a larger air pump may be needed when adding more media)

Combining Biological and Mechanical Filtration in the Evolution Aqua Nexus 320+ EAZY K+ Media Filter

What sets this Evolution Aqua Nexus 320+ EAZY K+ Media Filter apart is how it combines both types of cleaning in one continuous flow. Mechanical filtration removes the solids you can see, while biological filtration handles the invisible chemistry that keeps fish safe.

Because aeration bubbles keep the media beds active in the outer chambers, the bacteria stay oxygenated and productive. The result is a self-sustaining cycle: solids settle, particles get trapped, waste gets converted, and clean water heads back to your pond around the clock.

Matching the Right Flow Rate for the Evolution Aqua Nexus 320+ EAZY Filtration System

Getting the flow right matters for both clarity and biological performance. The Evolution Aqua Nexus 320+ EAZY Filtration System is rated for real-world use with clear limits so you can size your pump correctly:

• Maximum pond size: 9,000 gallons
• Recommended flow rate: maximum 3,431 gallons per hour

Stay within these figures and the water spends enough time in each chamber to be properly cleaned before it returns, keeping your pond healthy without pushing the filter past its design.

Low-Maintenance Design Built Around the Nexus+ Nexus 320+ EAZY

Nobody buys a pond to spend weekends elbow-deep in filter media. The valve layout on this unit makes upkeep quick and clean:

• Large 1.5 inch waste valve for fast, thorough waste removal
• 3/4 inch outer chamber maintenance valve for servicing the biological side
• 12mm air valves and airline to control aeration across the moving bed
• Settlement area and waste outlet that collect solids for easy flushing
• Overflow bypass in the exit chamber that protects flow if the system ever backs up

Everything is reachable from the outside, so routine cleaning takes minutes and your bacterial colonies stay largely undisturbed.

Nexus 320+ Specifications

At a glance, here is how the core numbers line up for your planning. These figures confirm the pond size, flow, and media volumes so you know exactly what you're getting before it arrives.

Product Specs