Filtreau Excellent Bio Drum 60 – Gravity Fed

Filtreau Excellent Bio Drum 60 – Gravity Fed

A larger mechanical stage for a gravity-fed filter installation

The Excellent Bio Drum 60 Gravity is aimed at a pond system needing a larger mechanical stage and several inlet connections. Its 650 mm-diameter drum and seven 110 mm inlets offer a significant step up from the smaller Bio Drum models while keeping the body length to 1,163 mm.

The filter includes an internal wash pump and 80W high-output UV-C. Maximum gravity-fed throughput is 60,000 litres/hour, which needs a properly designed supply from the pond and suitable equipment on the clean side of the filter.

Multiple branches need a coordinated design

Separate inlet branches can serve bottom drains and skimmers, with accessible valves allowing individual isolation. Their number alone does not guarantee balanced flow: long runs, bends and reduced pipe sizes still affect how much water each branch can deliver.

As water passes through the 120-micron screen, suspended solids collect on the mesh. A level change starts the automatic rinse, turning the drum and supplying the spray bar from the built-in wash pump. Waste is removed through a dedicated channel rather than sent into the next treatment stage.

Plan the biological stage alongside the drum

Mechanical throughput is only one part of choosing filtration for a large koi pond. The biological media and air supply must support the fish and feeding load, and the complete circuit must remain within the limits of every stage. A large drum does not make an undersized biological filter adequate.

The Excellent Combi 50/70 Gravity is a useful comparison when you want dedicated media sections in the same larger filter body. A separate mature biological system may instead make the Bio Drum format a better fit for an upgrade.

UV and access

The 80W high-output UV-C helps control suspended green-water algae. Match lamps and quartz to the installed unit and do not substitute an amalgam lamp simply because it has an 80W rating. Leave room to service the assembly safely, with the power isolated and the lamp shielded during operation.

The body is 1,163 × 850 × 780 mm. Allow working space in addition to those measurements, especially around the waste channel and the larger set of inlet and outlet pipes. A compact length can still produce a busy manifold if access is not planned.

Model specification

Larger or smaller alternatives

The Bio Drum 35 Gravity is narrower and uses a smaller drum. The Bio Drum 100 Gravity keeps the 650 mm diameter but doubles the drum length for the larger system. The pump-fed 60 is a different installation configuration.

Follow the Excellent operating manual and commission at a controlled circulation rate. Check draw-down, rinse discharge and screen condition, then adjust the system based on measured operation rather than starting at maximum pump output.

Related equipment and advice

• 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
• Filtreau Excellent Bio Drum 25 – Gravity Fed