Filtreau Excellent Combi Drum 30/40 Inline Trickle Add On

Filtreau Excellent Combi Drum 30/40 Inline Trickle Add On

High Oxygen Bakki Shower Upgrade for the Filtreau 30/40 Inline System

The Filtreau Excellent Combi Drum 30/40 Inline Trickle Add On is a high performance biological shower module designed exclusively for the Filtreau Excellent Combi Drum 30/40 Inline. It is not a standalone filter. Instead, it integrates directly with the inline combi system to increase oxygenation and expand biological capacity in demanding koi pond installations.

This upgrade enhances the standard 30/40 Inline combi by introducing high oxygen trickle filtration. As a result, it supports heavier stocking densities, increased feeding regimes and improved long term water stability.

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

High Oxygen Trickle Filtration for Inline Systems

As water exits the drum stage of the 30/40 Inline, it flows over the shower trays and cascades down through the biological media. During this process, the water makes extensive contact with air. Consequently, dissolved oxygen levels rise significantly across the pond system.

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

For inline installations where width is restricted, this elongated footprint provides strong biological performance without increasing overall system width.

Expanded Biological Capacity

The 30/40 Inline trickle add on increases the total biological surface area available within the system. This allows filtration capacity to scale alongside fish stocking density and feeding intensity.

Media is supplied separately. However, we strongly recommend 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 30/40 Inline
• High oxygen Bakki shower style biological upgrade
• Significantly increases dissolved oxygen levels
• Expands total biological filtration capacity
• Supports heavier stocking and increased feeding
• Improves ammonia conversion efficiency
• Inline friendly elongated footprint
• Compact and durable construction
• Add on module only – not a standalone filter

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Technical Specifications

• Compatibility: Filtreau Excellent Combi Drum 30/40 Inline
• Function: Biological trickle shower and oxygenation add on
• Installation Type: Inline add on module for existing 30/40 Inline system
• Media: Supplied empty – suitable for Far Infrared media or high performance shower media
• 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