Evolution Aqua K+ Advanced 30″ Bead Filter

Evolution Aqua K+ Advanced 30” Bead Filter

High Capacity Pressurised Filtration for Large Koi Ponds

The Evolution Aqua K+ Advanced 30” Bead Filter is a high capacity pressurised filtration system designed for larger koi ponds and heavily stocked ornamental systems up to 54,500 litres. Built around Evolution Aqua’s K+ Advanced media technology, this unit delivers powerful mechanical and biological filtration within a durable, compact housing.

Unlike traditional sand filters, the K+ Advanced system uses engineered floating media that provides significantly increased biological surface area. As a result, it supports efficient ammonia and nitrite conversion while also trapping fine suspended solids to maintain water clarity.

Because the filter operates under pressure, it offers flexible installation options. It can be positioned within a filter bay or remotely from the pond, making it well suited to larger pump fed systems.

Mechanical and Biological Filtration with 150 Litres of K+ Media

The 30 inch model is supplied preloaded with 150 litres of K+ Advanced Media. This provides a substantial increase in biological capacity compared to smaller models in the range.

Firstly, the media captures fine suspended particles, improving clarity and reducing visible waste. Secondly, it provides a protected surface area for nitrifying bacteria. Consequently, ammonia and nitrite are efficiently converted into nitrate, helping maintain stable water parameters in larger koi ponds.

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

Durable Construction with Large Flow Capability

The 30 inch housing is manufactured using a rotational moulding process. This creates a thick walled, UV resistant shell designed for long term outdoor installation.

With approximate dimensions of 750 mm width and 995 mm height, the unit remains relatively compact considering its filtration capacity. The 2 inch pipework connections support higher flow rates while maintaining efficient circulation.

With an optimal flow rate of 18,000 litres per hour, the 30 inch bead filter is capable of supporting high turnover in larger pond systems.

Recommended Pump Pairing

To achieve consistent performance at 18,000 litres per hour, correct pump selection is essential.

An Evolution Aqua Varipump 30,000 provides adjustable high output while maintaining energy efficiency. Alternatively, a powerful controllable pump such as the Pontec PondoMax Eco Control 20000 can be used depending on head height and pipework layout.

Maintaining the correct flow rate is critical. Excessive flow reduces dwell time within the media bed, while insufficient flow reduces turnover rate. Therefore, adjustable pumps provide flexibility for larger installations.

Ideal Pre Filtration and UV Integration

For best results, the K+ Advanced 30 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 significantly reduces backwash frequency and improves overall efficiency.

Similarly, integrating a suitably sized UV clarifier like the Evolution Aqua EvoUV 110w enhances green water control and supports improved clarity in larger systems.

Key Benefits

• High capacity pressurised mechanical and biological filtration
• Supplied with 150 litres of K+ Advanced Media
• Suitable for ponds up to 54,500 litres
• 2 inch pipework connections for higher flow
• Supplied multiport valve and air blower
• Effective backwash cleaning system
• Durable UV resistant rotational moulded body
• Ideal for heavily stocked koi ponds

Technical Specifications

• Maximum pond size: 54,500 litres
• Media volume supplied: 150 litres
• Optimal flow rate: 18,000 litres per hour
• Pipework size: 2 inch
• Dimensions: 750 mm width x 995 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 30″ 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