Evolution Aqua K+ Advanced 36″ Bead Filter

Evolution Aqua K+ Advanced 36” Bead Filter

Maximum Capacity Pressurised Filtration for Large Koi Ponds

The Evolution Aqua K+ Advanced 36” Bead Filter represents the highest capacity unit in the K+ Advanced range. Designed for ponds up to 91,000 litres, this pressurised filtration system supports heavily stocked koi ponds, ornamental lakes and demanding aquatic installations.

Evolution Aqua engineered this 36 inch model around its K+ Advanced media technology to deliver both powerful mechanical solids capture and extensive biological filtration. As a result, it maintains stable water parameters while delivering excellent clarity in high volume systems. Furthermore, because the filter operates under pressure, you can integrate it into larger pump fed systems while retaining flexible installation options.

Mechanical and Biological Filtration with 250 Litres of K+ Media

The 36 inch unit comes preloaded with 250 litres of K+ Advanced Media. This large media volume provides substantial biological surface area for nitrifying bacteria. At the same time, it supports effective fine mechanical filtration.

Firstly, the media traps suspended solids and reduces visible waste particles. Consequently, overall clarity improves quickly. Secondly, the biological surface allows bacteria to convert ammonia and nitrite into nitrate efficiently. Therefore, even under high feeding regimes, the system maintains stable water quality.

During cleaning cycles, the integrated air blower actively agitates the media bed. This agitation releases trapped debris. The multiport valve then directs the waste to drain. As a result, routine maintenance remains straightforward despite the filter’s scale.

High Flow Performance and Durable Construction

Evolution Aqua manufactures the housing using rotational moulding technology. This process strengthens the body and improves UV resistance. Therefore, the filter withstands long term outdoor exposure and demanding installations.

With approximate dimensions of 900 mm width and 1050 mm height, the 36 inch model delivers exceptional capacity while maintaining a practical footprint. The 2 inch pipework connections support an optimal flow rate of 30,000 litres per hour.

However, maintaining correct flow is essential at this scale. Proper pump matching ensures adequate dwell time within the media bed. At the same time, it maintains strong pond turnover. Consequently, the filter performs efficiently across both mechanical and biological stages.

Recommended Pump Pairing

To achieve 30,000 litres per hour, you should select a high output variable pump.

An Evolution Aqua Varipump 30,000 provides adjustable flow and energy efficient performance. In larger installations with higher head height, dual pump configurations may be considered depending on system design.

Correct flow balance is critical. Excessive flow reduces media contact time. Conversely, insufficient flow reduces turnover rate. Therefore, careful pump selection directly influences long term filtration performance.

Ideal Pre Filtration and UV Integration

For optimal results, pair the K+ Advanced 36 inch bead filter with effective mechanical pre filtration such as a Cetus Sieve. By removing larger solids before they enter the bead chamber, you significantly improve efficiency and reduce backwashing frequency.

Similarly, integrating appropriately sized UV clarifiers like the Evolution Aqua EvoUV 110w supports green water control and enhances clarity in larger pond systems.

Key Benefits

• Maximum capacity pressurised mechanical and biological filtration
• Supplied with 250 litres of K+ Advanced Media
• Suitable for ponds up to 91,000 litres
• 2 inch pipework connections for high flow systems
• Optimal flow rate of 30,000 litres per hour
• Supplied multiport valve and air blower
• Durable UV resistant rotational moulded body
• Designed for large koi ponds and commercial installations

Technical Specifications

• Maximum pond size: 91,000 litres
• Media volume supplied: 250 litres
• Optimal flow rate: 30,000 litres per hour
• Pipework size: 2 inch
• Dimensions: 900 mm width x 1050 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 36″ 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