OASE BioMaster 350 Canister Filter

The OASE BioMaster 350 Canister Filter offers ultimate convenience among external aquarium filters, meeting the highest demands in water filtration and ease of maintenance. The combination of highly effective biological filtration using Hel-X media and mechanical/biological filtration with filter sponges ensures consistently clear and healthy aquarium water.

Designed for aquariums up to 350 litres, the BioMaster 350 features an EasyClean pre-filter chamber that allows routine maintenance without needing to dismantle the entire filter. Automatic shut-off valves and an integrated safety lock prevent unwanted water leaks when removing the pre-filter module, while the built-in venting button allows for fast priming and easy startup.

What’s Included

  • External canister filter unit
  • Pre-installed filter media (Hel-X and filter sponges)
  • Hoses and adapters
  • Suction and discharge pipes
  • Water diffuser

Key Features & Benefits

  • EasyClean pre-filter chamber for fast and simple maintenance
  • High filter volume for exceptional biological and mechanical filtration
  • Hel-X biological media supports beneficial bacteria growth
  • Automatic shut-off and safety lock prevent leaks
  • Integrated venting button for quick and easy priming
  • Compatible with the OASE HeatUp 200 heater (sold separately)
  • Available in standard or Thermo versions with integrated heater
  • Suitable for both freshwater and marine aquariums

Technical Specifications

Product Code 08OA021 / 54718
Maximum Aquarium Size Up to 350 L
Maximum Flow Rate 1100 L/h
Maximum Head Height 1.40 m
Power Consumption 18 W
Rated Voltage 230 V / 50 Hz
Hose Length 1 unit / 4 m
Hose Connection (Inner / Outer) 16 / 22 mm
Dimensions (L × W × H) 240 × 240 × 425 mm
Net Weight 5.60 kg
Power Cable Length 1.5 m
Warranty 3 + 1 years (upon request)
Suitable for Freshwater Yes
Suitable for Saltwater Yes
Upgrade with integrated heating:
The BioMaster 350 is compatible with the OASE HeatUp 200 heater, allowing discreet temperature control with no visible equipment inside the aquarium.
View the HeatUp 200 here
Spare parts & media:
Replacement filter media and spare parts are readily available to keep your BioMaster running at peak performance.
Browse BioMaster spare parts
Need advice?
If you’re unsure whether the BioMaster 350 is the right filter for your aquarium, feel free to contact us and our team will be happy to help.