Oase Indoor Aquatics BioMaster 2 250 External Filter
The Oase BioMaster 2 250 External Filter represents the next generation of canister filtration, delivering powerful 4-stage filtration for freshwater and marine aquariums up to 70 gallons. Reimagined with updated features, this is our most efficient and user-friendly filter yet, keeping your aquatic environment crystal clear with German-engineered precision.
Key Features:
- 4-stage sealed filtration system forces water through various media to maximize beneficial bacteria growth and ensure thorough cleaning
- EasyClean pre-filter simplifies maintenance, improves efficiency, and prolongs the lifespan of main filter foams
- Flow rate up to 250 GPH with modular spray bar and flow control attachment
- Heater integration capability - easily integrate an OASE HeatUp heater to minimize in-tank equipment and protect inhabitants from direct heat contact (heater sold separately)
- Energy-efficient 15W operation reduces power consumption
- Large filter volume (1.2 gallons) provides extensive surface area for beneficial bacteria
- Includes premium Hel-X Biomedia for superior biological filtration
- Made in Germany with precision engineering
- UL certified filter with warranty protection
What's Included:
- BioMaster 2 250 canister filter unit
- Four carbon pre-filter foams
- One 30 ppi filter foam
- Two 20 ppi filter foams
- Hel-X Biomedia
- Curved inlet and outlet tubes
- Inlet strainer
- Water outlet nozzle
- Modular spray bar with flow control attachment
- Tubing and fittings
- Heater adapter and plug (heater sold separately)
- Power cable
Perfect for both beginner and experienced aquarists who demand the best in filtration technology. The BioMaster 2 250 maintains healthy water parameters with German-engineered precision, so you can focus on enjoying your underwater world.
Technical Specifications
| Dimensions | 9.4 x 9.4 x 14.6 inches (240 x 240 x 370 mm) |
| Weight | 9 lbs. (4.1 kg) |
| Rated Voltage | 120V / 60 Hz |
| Power Consumption | 15W |
| Power Cord Length | 6 ft. (1.8 m) |
| Max. Flow Rate | 250 GPH (900 LPH) |
| Max. Head Height | 5.6 ft. (1.7 m) |
| Tubing Connection | 5/8 in. ID / 0.87 in. OD (16 mm / 22 mm) |
| Tubing Length | 5/8 in. x 13 ft. (16 mm x 4 m) |
| Filter Volume | 1.2 gallons (4.4L) |
| Pre-Filter Volume | 0.11 gallons (0.4L) |
| Recommended Aquarium Size | 70 gallons (250L) |
| Suitable for | Fresh and marine water |
Frequently Asked Questions
Q: What size aquarium is the BioMaster 2 250 suitable for?
A: This filter is designed for freshwater and marine aquariums up to 70 gallons. For optimal performance, we recommend using it on tanks between 40-70 gallons.
Q: What makes the EasyClean pre-filter special?
A: The EasyClean pre-filter is a game-changer for maintenance. It captures larger debris before it reaches the main filter foams, making cleaning simpler, improving overall efficiency, and significantly extending the lifespan of your main filter media. This means less frequent deep cleaning and lower long-term maintenance costs.
Q: Can I add a heater to this filter?
A: Yes! The BioMaster 2 250 includes a heater adapter and plug, allowing you to easily integrate an OASE HeatUp heater (sold separately) into the canister. This helps save space in your aquarium, maintains clean aesthetics, and protects your fish from direct contact with the heat source.