Filtreau Excellent Combi Drum 50/70 Trickle Add On

Filtreau Excellent Combi Drum 50/70 Trickle Add On

High Oxygen Bakki Shower Upgrade for the Filtreau 50/70 Combi System

The Filtreau Excellent Combi Drum 50/70 Trickle Add On is a high performance biological shower module designed exclusively for the Filtreau Excellent Combi Drum 50/70. It is not a standalone filter. Instead, it installs directly onto the 50/70 combi system to increase oxygenation and expand biological capacity in demanding koi pond environments.

This upgrade enhances the performance of the standard 50/70 combi drum by adding high oxygen trickle filtration. As a result, it supports heavier stocking densities, higher feeding rates and improved long term water stability.

Because of its cascading tray configuration, many pond keepers also refer to this type of unit as a Bakki shower.

Increased Oxygenation Through Trickle Filtration

As water exits the drum stage of the Combi 50/70, it flows over the shower trays and cascades down through the media. During this process, the water comes into constant contact with air. Consequently, dissolved oxygen levels rise significantly across the system.

Higher oxygen levels directly benefit koi health. Fish remain more active, show improved growth and develop stronger immune response. In addition, beneficial nitrifying bacteria function more efficiently in oxygen rich conditions. Therefore, ammonia and nitrite conversion becomes faster and more stable.

For larger koi ponds operating at higher flow rates, this additional oxygenation provides a measurable improvement in overall system performance.

Expanded Biological Capacity

The 50/70 trickle add on increases the total biological surface area available within the system. This allows filtration performance to scale with fish stocking density and feeding intensity.

Media is supplied separately. However, we strongly recommend using high performance shower media such as Far Infrared media to maximise nitrification efficiency and gas exchange.

Because water flows over the media rather than through a submerged chamber, gas exchange improves considerably. As a result, ammonia processing efficiency increases and unwanted dissolved gases dissipate more effectively.

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Key Features

• Designed specifically for the Filtreau Excellent Combi Drum 50/70
• High oxygen Bakki shower style biological upgrade
• Significantly increases dissolved oxygen levels
• Expands overall biological filtration capacity
• Supports heavier stocking and higher feeding regimes
• Improves ammonia conversion efficiency
• Enhances long term water stability
• Durable outdoor rated construction
• Add on module only – not a standalone filter

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Technical Specifications

• Compatibility: Filtreau Excellent Combi Drum 50/70
• Function: Biological trickle shower and oxygenation add on
• Installation Type: Add on module for existing 50/70 system
• Media: Supplied empty – suitable for Far Infrared media or high performance shower media
• Flow Handling: Designed to match Combi 50/70 system flow rates
• Construction: Heavy duty weather resistant housing

Helpful Filtreau links and compatible products

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

• View the full Filtreau range
• Browse Filtreau drum filters
• Read our drum filter guide
• Compare all drum filters
• Choose a variable pond pump
• Choose a Charles Austen air pump
• Pressure pipe, valves and fittings
• View Filtreau UV-C units
• Find replacement UV lamps and quartz sleeves