Filtreau Excellent Combi Drum 25/30 Low Trickle Add On

SKU: FS862
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The Filtreau Excellent Combi Drum 25/30 Low Trickle Add On is a Bakki shower style biological upgrade designed exclusively for the 25/30 Low combi drum system. It increases dissolved oxygen levels and expands biological capacity for koi ponds.

£1,099.99 (inc VAT)

Filtreau Excellent Combi Drum 25/30 Low Trickle Add On

High Oxygen Bakki Shower Upgrade for the Filtreau 25/30 Low System

The Filtreau Excellent Combi Drum 25/30 Low Trickle Add On is a high performance biological shower module designed exclusively for the Filtreau Excellent Combi Drum 25/30 Low. It is not a standalone filter. Instead, it installs directly onto the 25/30 Low combi system to increase oxygenation and expand biological capacity in compact pond installations.

This upgrade enhances the low profile 25/30 system by introducing high oxygen trickle filtration. As a result, it improves water stability, strengthens biological performance and supports healthier koi and ornamental fish.

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

High Oxygen Trickle Filtration in a Low Profile Format

As water exits the drum stage of the 25/30 Low, it flows over the shower trays and cascades down through the biological media. During this process, the water makes continuous contact with air. Consequently, dissolved oxygen levels increase significantly across the pond system.

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

For compact installations where height and footprint are restricted, this low profile shower format provides strong biological performance without increasing system width.

Expanded Biological Capacity

The 25/30 Low trickle add on increases the total biological surface area available within the system. This allows filtration performance to scale with fish stocking levels 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.


Key Features

  • Designed specifically for the Filtreau Excellent Combi Drum 25/30 Low
  • High oxygen Bakki shower style biological upgrade
  • Significantly increases dissolved oxygen levels
  • Expands total biological filtration capacity
  • Supports improved water stability and fish health
  • Improves ammonia conversion efficiency
  • Compact low profile footprint
  • Durable outdoor rated construction
  • Add on module only – not a standalone filter

Technical Specifications

  • Compatibility: Filtreau Excellent Combi Drum 25/30 Low
  • Length: 660mm
  • Width: 320mm
  • Height: 822mm
  • Function: Biological trickle shower and oxygenation add on
  • Installation Type: Add on module for existing 25/30 Low 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.

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