Oase BioMaster 850 Version 2 Thermo – External Canister Filter with Integrated Heater

Ultimate Filtration Power for Large Aquariums

The Oase BioMaster 850 Thermo is the flagship of the BioMaster series, designed for aquariums up to 250 gallons (850L). Featuring an integrated HeatUp 400W heater, it provides precise and consistent temperature control while eliminating the need for visible in-tank heaters — keeping your aquascape clean and protecting your fish from direct contact.

Equipped with the renowned EasyClean pre-filter module, maintenance is quick and hassle-free. The advanced four-stage sealed filtration system maximises water clarity, encourages strong biological balance, and ensures healthy aquarium conditions in both freshwater and saltwater environments.

Key Features

• Integrated heating + filtration – HeatUp 400W heater included

• EasyClean pre-filter – Remove and rinse without opening the main canister

• Four-stage sealed filtration – Mechanical, biological, and chemical filtration combined

• Powerful flow rate – 400 GPH (1550 LPH) for large aquariums

• Low energy consumption – Just 24W (filter) + 400W (heater)

• Freshwater & marine ready – Reliable for aquariums up to 250 gallons (850L)

• German engineering, Italian craftsmanship – Built for durability and long-term performance

Technical Specifications