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The OCEANTECH™ Mechanical Filtration Units are specifically designed to work in conjunction with AFM (Activated Filter Media) filtration media, to provide the most effective mechanical filtration. The Solid HDPE (High-Density Polyethylene) filter housing is the first and only application in the aquatic industry, providing durability and a long life cycle-thereby reducing your ROI.

AFU Series

AFU Series

Materials Used
Pressure Sensor Standard
Temperature Sensor Standard
Flow Switch Standard
Prefilter Pump Optional
Flow meter Optional
Automatic Back Wash Optional
Besgo Valve Optional
Acrylic Lid Optional

The OCEANTECH™ AFU series hydraulically engineered for optimal filtration velocity both in filtration and backwash phases to ensure enough space for bed expansion. This results in efficient and effective backwashing of the filter. The standardised nozzle plate distribution and uniform cylindrical body enables the complete utilisation of the filter bed.




Technical Specifications
Body MaterialPEPEPEPE
Mechanical Cylinder Quantity2 pcs2 pcs2 pcs2 pcs
Pump Quantity1 pcs1 pcs1 pcs1 pcs
UV Quantity1 pcs1 pcs1 pcs1 pcs
Nozzle Quantity26 pcs42 pcs62 pcs102 pcs
Mechanical Unit Capacity (23 m/h)6,7 m³/h13 m³/h20,9 m³/h36 m³/h
Mechanical Unit Pump Power0,66 kW0,71 kW0,97 kW1,9 kW
UV Capacity (400 J/m2)9 m³/h19,5 m³/h23 m³/h36 m³/h
UV Power0,2 kW0,2 kW0,2 kW0,4 kW
Total Power0,86 kW0,91 kW1,17 kW2,3 kW
Water Inlet Pipe Section Velocity0,73 m/sec0,9 m/sec1,08 m/sec0,82 m/sec
Water Outlet Pipe Section Velocity1,16 m/sec1,30 m/sec1,4 m/sec1,57 m/sec
Mechanical Unit Backwash Flow6,7 m³/h13 m³/h41,8 m³/h36 m³/h
AFM Grade 24 Bag (25 kg/bag)7 Bag (25 kg/bag)5 Bag (25 kg/bag)14 Bag (25 kg/bag)
AFM Grade 19 Bag (25 kg/bag)17 Bag (25 kg/bag)16 Bag (25 kg/bag)44 Bag (25 kg/bag)
Dry Load152 kg250 kg375 kg634 kg
Operational Load565 kg1070 kg2520 kg3220 kg
Footprint1165 mm x 883 mm1578 mm x 1113 mm1941 mm x 1303 mm2477 mm x 1673 mm
Mechanical DiameterØ 450 mmØ 630 mmØ 800 mmØ 1000 mm
Mechanical Filter Section Area0,28 m²0,56 m²0,9 m²1,42 m²
Max Height1878 mm1878 mm1878 mm2067,5 mm
Water InletØ 63 mmØ 75 mmØ 110 mmØ 125 mm
Water OutletØ 63 mmØ 63 mmØ 75 mmØ 90 mm

*The dimensions above have been customized based on specific user requirements. All of our aquaculture tanks can be tailored to suit all kinds of aquaculture projects.


AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sand filters without the need of additional investments in infrastructure. AFM® resists biofouling, biocoagulation and transient wormhole channeling of unfiltered water and outlasts all other filter media.

✓ AFM® is a highly engineered product manufactured from a specific glass type, processed to obtain the optimum particle size and shape. It is then exposed to a 3-step activation process to become self-sterilising and to acquire superior adsorption properties. During activation, the structure and the chemistry of the glass are modified.
AFM® benefits at a glance
More than doubles the performance of an existing filtration system

✓Is not subject to biodynamic instability and will never allow untreated water to pass
✓Substantially lowers chlorine oxidation demand
✓Lowers backwash water demand by an average of 50%
✓Is expected to last for the life of the filtration system
✓Provides quick return on investment

Self-sterilizing surface
Unique 100% bio-restistant filter media

When in contact with water flowing through the filter, a small amount of free radicals (O and OH) are formed on the surface of the grains. Thanks to their strong oxidation potential, free radicals protect AFM® from colonisation by bacteria and fully prevent the formation of biofilm.

Always Meet Your
Aquatic Needs

Our mechanical filter units are manufactured with a focus on durability, ensuring a long-lasting solution for your aquatic environments. The lightweight and strong design makes installation and integration into existing projects or facilities easy and seamless.

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