OASE BioMaster² Thermo 250 – External Canister Filter with Heater (up to 250L)

The OASE BioMaster² Thermo 250 is a premium external canister filter with integrated heater, engineered for aquariums up to 250 litres. The second generation of OASE's flagship BioMaster line brings enhanced biological filtration capacity, whisper-quiet operation, and unmatched ease of maintenance — all in a single, elegantly designed unit.

The built-in pre-filter chamber collects coarse debris before it reaches the main filter media, dramatically extending cleaning intervals and protecting biological colonies from disruption. When cleaning time does come, the pre-filter can be serviced independently — without stopping the main filter or disturbing the biological media. The integrated heater maintains precise water temperature with minimal energy consumption.

Key Features

• Integrated heater — precise temperature control, no separate unit needed
• Pre-filter chamber — independently serviceable without stopping the main filter
• Enhanced biological filtration with large media volume
• Ultra-quiet operation — suitable for living rooms and bedrooms
• Easy-close locking clamps — tool-free maintenance
• Suitable for aquariums up to 250 litres

Specifications

• Model: BioMaster² Thermo 250
• Aquarium volume: up to 250 L
• Flow rate: 950 L/h
• Filter volume: 9.5 L
• Heater: integrated