Evolution Aqua K+ Advanced 24″ Bead Filter

Evolution Aqua K+ Advanced 24” Bead Filter

High Capacity Pressurised Pond Filtration System

The Evolution Aqua K+ Advanced 24” Bead Filter is a high capacity pressurised filtration system designed for koi ponds and ornamental ponds up to 36,000 litres. Built around Evolution Aqua’s K+ Advanced media, this unit delivers powerful mechanical and biological filtration within a compact, durable housing.

Unlike traditional sand or bead systems, the K+ Advanced range uses engineered floating media that provides increased surface area for beneficial bacteria. As a result, the filter supports efficient ammonia and nitrite conversion while also capturing fine suspended solids.

Because the unit operates under pressure, it offers flexible installation options. It can be positioned below pond level or remotely within a filter bay. Therefore, it is well suited to pump fed systems and installations where gravity filtration is not practical.

Mechanical and Biological Filtration with 100 Litres of K+ Media

The 24 inch model is supplied preloaded with 100 litres of K+ Advanced Media. This significantly increases biological capacity compared to the 20 inch model.

Firstly, the media traps fine suspended particles, improving water clarity. Secondly, it provides a large protected surface area for nitrifying bacteria. Consequently, the system delivers stable biological performance even in higher stocked koi ponds.

During cleaning, the supplied air blower agitates the media bed, releasing trapped debris. The multiport valve then allows simple backwashing to waste. As a result, maintenance is straightforward and does not require dismantling the unit.

Durable Rotationally Moulded Construction

The housing is manufactured using a rotational moulding process. This creates a thick walled, UV resistant shell designed for long term outdoor use.

With approximate dimensions of 620 mm width and 810 mm height, the 24 inch unit remains compact relative to its filtration capacity. Consequently, it provides strong performance without requiring the footprint of larger multi chamber systems.

The 2 inch pipework connections allow higher flow rates while maintaining efficient circulation.

Recommended Pump Pairing

To achieve the optimal flow rate of 12,000 litres per hour, correct pump selection is essential.

An Evolution Aqua Varipump 20,000 allows precise flow adjustment and efficient operation. Alternatively, a high output controllable pump such as the Pontec PondoMax Eco Control 15000 offers a cost effective solution.

Maintaining correct flow is critical. Excessive flow reduces filtration dwell time, while insufficient flow reduces turnover rate. Therefore, adjustable pumps provide the most flexibility.

Ideal Pre Filtration and UV Integration

For best results, the K+ Advanced 24 inch bead filter performs exceptionally well when paired with a mechanical pre filter such as a Cetus Sieve. Removing larger solids before they enter the bead filter reduces cleaning frequency and improves overall efficiency.

Similarly, pairing the system with a suitably sized UV clarifier like the Evolution Aqua EvoUV 55w enhances green water control and supports clearer water.

Key Benefits

• Pressurised mechanical and biological filtration
• Supplied with 100 litres of K+ Advanced Media
• Suitable for ponds up to 36,000 litres
• Compact 24 inch housing
• 2 inch pipework connections for improved flow
• Supplied multiport valve and air blower
• Effective backwash cleaning system
• Durable UV resistant rotational moulded body

Technical Specifications

• Maximum pond size: 36,000 litres
• Media volume supplied: 100 litres
• Optimal flow rate: 12,000 litres per hour
• Pipework size: 2 inch
• Dimensions: 620 mm width x 810 mm height
• Filter type: Pressurised bead filter

Practical setup advice

Before ordering, think about how this product fits into the full pond setup. Compatibility, maintenance access, pipe or hose size and future servicing are often just as important as the headline specification. A product that is technically suitable can still disappoint if it is installed with restricted flow, poor access or the wrong supporting equipment.

Where possible, plan the main product and the accessories together. This makes installation neater, maintenance easier and the final system more reliable over time.

UV sizing and maintenance notes

Evolution Aqua K+ Advanced 24″ Bead Filter should be matched to the pond volume, flow rate and water clarity problem you are trying to solve. UV clarification works best when water passes the lamp at a suitable speed and the quartz sleeve is kept clean. If the flow is too fast, contact time can be reduced. If the lamp is old or the quartz sleeve is dirty, performance can drop even when the unit still appears to be switched on.

• Replace UV lamps as part of routine seasonal maintenance.
• Clean or inspect the quartz sleeve when water clarity starts to deteriorate.
• Match the UV to the pump and filter rather than installing it in isolation.
• Allow safe access for lamp changes and winter maintenance.

Good UV performance also depends on mechanical filtration. Removing fine debris before the UV helps the lamp work on green water algae more effectively.

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
• Browse Evolution Aqua K+ Advanced bead filters
• Read our pressure filter guide
• Choose a suitable Evolution Aqua Varipump
• Add Evolution Aqua evoUV clarification
• Pressure pipe, valves and fittings

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