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[Oase] BioMaster 250 External Canister Filter
[Oase] BioMaster 250 External Canister Filter
[Oase] BioMaster 250 External Canister Filter
[Oase] BioMaster 250 External Canister Filter

[Oase] BioMaster 250 External Canister Filter

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Packed with innovations to make the task of aquarium filtering as simple and efficient as possible


• High filter volume: The combination of highly effective biological filtering with Hel-X and mechanical/biological cleaning with filter sponges is ideally coordinated to ensure healthy and clear aquarium water. The water flows through the pre-filter first, ensuring an extra-long service life.

• Complete set for a quick start: Including filter media, hoses, adapter, flow regulator, suction and discharge pipe as well as water diffuser.

• Optimum filtration: Fine 45 PPI pre-filter sponge to optimize mechanical filtration of coarse dirt and prolong the lifespan of biological media

• EasyClean prefilter module: No more bothersome dismantling of the filter – simply remove the pre-filter module, rinse and replace

• Practical: Venting button for effective water suction to get started quickly and easily during installation and after cleaning

• Safe: Shut-off mechanism and safety lock prevent unwanted water leakage, e.g. when removing the pre-filter module

• Well-regulated: Control the flow on the filter or via the adapter set

• 3 year warranty plus 1 year warranty extension with online registration

What's in the Box

Aquarium Filter, four carbon pre-filter foams, one 20 ppi filter foam, two 30 ppi filter foams, Hel-X Biomedia, intake tube with inlet strainer, water distributor nozzle, spray bar, inlet and outlet adapters with flow control, tubing, fittings, heater adapter, and power cable.


Suitable for aquariums up to max. (l)
Dimensions (L x W x H)mm
240 x 240 x 370
Rated voltage
230V / 50Hz
Power consumption (W)
Power cable length (m)
Net weight (kg)
Guarantee* Years
Max. flow rate (l/h)
Max. head height, metres (m)
Hose (quantity/length)
1 unit/4m
Connection for hoses ø (inner/outer)
16/22 mm
Filter volume (l)
Pre-filter volume (l)
Suitable for freshwater
Suitable for saltwater