Filtreau Excellent Bio Drum 25 – Gravity Fed

Filtreau Excellent Bio Drum 25 Gravity Fed

Compact Gravity Fed Mechanical Drum Filtration for Koi and Ornamental Ponds

The Filtreau Excellent Bio Drum 25 Gravity Fed is a compact professional mechanical drum filtration system designed for koi ponds and ornamental ponds up to approximately 25000 litres. It is engineered specifically for gravity fed installations where the filter sits at pond water level and receives water directly from bottom drains.

With a maximum flow rate of approximately 25m³ per hour, this model provides efficient automated mechanical separation for small to medium sized pond systems. Because it focuses purely on mechanical filtration, it is designed to be installed ahead of a separate biological filter such as a moving bed, shower filter or multi bay system.

By removing solids before they enter the biological stage, the drum significantly reduces organic load. As a result, the downstream bio filter operates more efficiently and remains cleaner over time.

Precision Mechanical Separation with Automatic Cleaning

At the centre of the unit sits a stainless steel drum fitted with a precision 120 micron stainless mesh screen. This fine mesh captures fish waste, uneaten food and suspended debris before they break down in the system. Consequently, ammonia spikes are reduced and overall water clarity improves.

As debris builds up on the drum screen, a stainless steel float switch detects the restriction. It then activates the automatic cleaning cycle. The heavy duty SPG XL drive motor delivers 130Nm of torque to rotate the drum. At the same time, high pressure spray nozzles powered by the internal RVS 5 bar flushing pump clean the mesh and flush waste directly to drain.

After separation, water exits the unit via 2 x 110mm outlets and flows to a separate biological filtration stage. Because the system separates mechanical and biological processes, you can size and configure your bio filter precisely to match fish stocking levels and feeding intensity.

Overall, the Filtreau Excellent Bio Drum 25 Gravity Fed delivers reliable automated mechanical waste removal within a compact gravity fed configuration.

---

Key Features

• Designed for gravity fed pond systems
• Suitable for koi ponds up to approximately 25000 litres
• Maximum flow rate up to approximately 25m³ per hour
• Precision 120 micron stainless steel drum screen
• Fully automatic self cleaning operation
• Industrial SPG XL drive motor delivering 130Nm torque
• Internal RVS 5 bar high pressure flushing pump
• 3 x 110mm gravity fed inlets
• 2 x 110mm outlets
• Designed to feed a separate biological filtration stage
• Control box included

---

Technical Specifications

• Model type Gravity Fed Mechanical Drum
• Maximum flow rate approximately 25m³ per hour
• Suggested koi pond capacity approximately 25000 litres
• Inlets 3 x 110mm
• Outlets 2 x 110mm
• Drive motor SPG XL 130Nm 60W 220V
• Drum size 400 x 400mm
• Mesh 120 micron stainless steel
• Flushing pump RVS 5 bar 600W 220V
• Control box included
• Manufacturer code: WMC01DRG

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