Oase BioMaster² 250 External Aquarium Filter

Manufactured in Germany to the highest standards, the BioMaster 2 250 combines cutting-edge filtration technology with smart design features that make it ideal for hobbyists seeking crystal-clear water and minimal maintenance. At the heart of the system is the innovative EasyClean pre-filter module, which allows quick and mess-free cleaning without dismantling the entire unit, preserving beneficial bacteria and significantly reducing maintenance time. The filter offers a high flow rate of up to 900 litres per hour and a maximum head height of 1.3 metres, ensuring excellent water circulation and optimal oxygenation throughout the tank.

Inside the canister, a multi-stage filtration process combines mechanical, biological, and optional chemical media, including Oase’s advanced Hel-X bio media, which provides a large surface area for the growth of nitrifying bacteria essential for maintaining healthy water conditions. The BioMaster 2 250 operates quietly and efficiently, with a typical power consumption of just 11 watts, making it ideal for use in living spaces. It is also HeatUp-compatible, meaning an Oase heater can be integrated directly into the filter body to create a clean, streamlined appearance inside the aquarium with no need for a separate in-tank heater.

Built with durability and safety in mind, the filter features secure locking clips, automatic shut-off valves to prevent leaks during maintenance, and a simple priming button for easy startup. All necessary hoses, adapters, suction and return pipes, and filter media are included, making setup straightforward. Whether you’re keeping tropical fish, aquascaping, or maintaining a marine setup, the Oase BioMaster 2 250 offers superior performance, low energy consumption, and long-term reliability, making it one of the most advanced external filters available for medium-sized aquariums.

Key Features

Specification

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BioMaster² Instructions