Evolution Aqua K+ Filter Media

Evolution Aqua K+ Filter Media

High Performance Biological and Mechanical Filter Media for Ponds

Evolution Aqua K+ Filter Media is an advanced filtration media designed to deliver both biological and mechanical filtration in pond systems. Developed after extensive research, it improves upon traditional plastic media by offering faster maturation and enhanced filtration performance. As a result, it helps create clearer and healthier pond water.

Unlike standard filter media that can take time to establish effective bacteria colonies, K+ Media is manufactured with minerals and enzymes infused during production. This significantly speeds up the maturation process, allowing beneficial bacteria to colonise more quickly. Therefore, your filtration system becomes effective in a shorter period of time.

With a high total surface area of 1,350m² per m³ and a protected surface area of 1,025m² per m³, K+ Media provides an ideal environment for biological filtration. It supports the breakdown of ammonia, ammonium and nitrite, helping maintain stable and healthy water conditions in koi ponds and garden ponds.

In addition to biological performance, the structure of the media also captures fine particles, providing mechanical filtration benefits. This dual function makes it a versatile upgrade for a wide range of filtration systems.

Faster Maturation and Enhanced Filtration Performance

K+ Media is designed to establish a stable biofilm far quicker than traditional filter media. The inclusion of minerals such as magnesium and calcium, combined with enzymes, encourages rapid bacterial growth. As a result, filters reach optimal performance faster and maintain consistency over time.

The media also creates protected zones within its structure where beneficial microorganisms can thrive. This supports a more balanced pond ecosystem while improving overall water clarity.

Suitable for use in moving bed filters and static systems, K+ Media can be added to existing setups to increase biological capacity. It is particularly effective when used within Evolution Aqua Nexus 220+ and Nexus 320+ filters.

Key Features

• Advanced biological and mechanical filtration media
• Mineral infused design for faster maturation
• High surface area for improved bacterial colonisation
• Supports breakdown of ammonia, ammonium and nitrite
• Captures fine particles for improved water clarity
• Creates stable biofilm for consistent filtration performance
• Suitable for moving bed and static filter systems
• Ideal upgrade for Nexus 220+ and Nexus 320+ filters
• Designed and manufactured in the UK

Technical Specifications

• Media type: Biological and mechanical filter media
• Diameter: 10.2mm
• Length: 8mm
• Total surface area: 1,350m² per m³
• Protected surface area: 1,025m² per m³
• Application: Moving bed and static filtration systems
• Available sizes: 25 litres and 50 litres

Before you order

Check the product size, connection details, access requirements and the equipment it will be used with. On ponds, the surrounding system often decides how well the product performs. Suitable pump flow, clean filters, correctly sized hose or pipework, good access for servicing and realistic maintenance all help the product work as intended.

Sizing and maintenance notes

When choosing Evolution Aqua K+ Filter Media, sizing should be based on the real pond rather than the headline pond volume alone. Fish load, feeding level, sun exposure, waste load and maintenance routine all affect how hard the filter has to work. Koi ponds and heavily stocked fish ponds should normally be sized more generously than wildlife or lightly stocked ornamental ponds.

• Allow enough space around the filter for cleaning and servicing.
• Check waste outlets, drain access and return pipework before installation.
• Pair the filter with suitable pump flow and UV clarification where required.
• Keep spare foams, lamps, seals or service parts in mind for future maintenance.

Maintenance and compatibility checks

It is worth checking the supporting parts at the same time as the main product. Hose size, pressure pipe, valves, unions, UV units, filter inlets, air manifolds, spares and cleaning access can all affect how well the final system works. A correctly matched installation usually performs better and is easier to maintain than one built from parts chosen separately.

Product choice checklist

Before buying, double check the product against the way the pond is actually set up. Look at the water volume, fish load, flow rate, pipework, filter position, service access and the parts already installed. A product that is correctly matched to the system will usually be quieter, easier to maintain and more reliable than one chosen only because it has a higher rating.

This is especially important on koi ponds and larger garden ponds, where pumps, filters, UVs, air systems, food, treatments and fittings all affect one another. Taking a little time to check compatibility before ordering helps avoid restricted flow, awkward maintenance and unnecessary returns later.

Helpful links and compatible products

Use these links to plan the rest of the system around this product. The right pump, pipework, UV, air supply, media or spares will make the installation easier to set up, maintain and service.

• View the full Evolution Aqua range
• Evolution Aqua Nexus filters
• Evolution Aqua EazyPod filters
• Evolution Aqua Varipumps
• Evolution Aqua evoUV clarifiers
• Evolution Aqua Airtech air pumps

More useful ranges and guides

These related ranges and guides may help you compare options, choose the right accessories and plan the full pond system rather than viewing this product in isolation.

• Browse pond filters
• Browse pond pumps
• Evolution Aqua Nexus pond filter guide