Oase BioMaster 2 External Filter

Experience powerful, low-maintenance aquarium filtration designed for crystal-clear, healthy water. This external filter range combines highly effective biological filtration with Hel-X media and mechanical-biological cleaning via filter sponges, ensuring stable water quality in both freshwater and saltwater setups. An EasyClean pre-filter chamber lets you remove, rinse, and replace the pre-filter in seconds—no full dismantling required—while the water flows through the pre-filter first for an extra-long service life of the main media.

A practical venting/priming button enables quick water intake and an easy start during installation or after cleaning. Safety comes built-in with an automatic shut-off mechanism and safety valve to prevent unintentional water leakage when removing the pre-filter module. The unit runs quietly and saves energy, supporting efficient, economical operation in everyday use. For added flexibility, a HeatUp adjustable heater can be retrofitted if desired.

Optimised water routing and an improved connection set deliver an increased flow rate compared to previous generations. Fine 30/45 ppi pre-filter sponges provide optimal mechanical filtration of coarse dirt, protecting the biological media and extending service intervals. The generous filter volume across the range supports robust biological activity for dependable, long-term performance.

Each unit includes filter media, hoses, adapters, intake and outlet pipes—ready for immediate use. Enjoy easy maintenance, reliable safety features, and quiet, energy-saving performance for pristine aquarium water.

• EASYCLEAN PREFILTER MODULE: Remove, rinse, replace—no full dismantling
• INCREASED FLOW RATE: Optimised water routing and new connection set
• LARGE FILTER VOLUME: Hel-X biological media plus filter sponges for clear, healthy water
• LONGER SERVICE LIFE: Pre-filter-first design and compatible biological media
• OPTIMUM FILTRATION: Fine 30/45 ppi pre-filter sponge for efficient mechanical capture
• PRACTICAL: Venting/priming button for quick starts after setup or cleaning
• SAFE: Automatic shut-off and safety valve help prevent leaks
• ECONOMICAL & QUIET: Energy-saving, low-noise operation
• FLEXIBLE: Optional retrofit with an adjustable heater
• READY TO USE: Supplied with media, hoses, adapters, intake and outlet pipes

Suitable for freshwater and saltwater aquariums. Select the model that matches your aquarium volume and desired flow performance.