The OASE BioMaster series is an externally mounted aquarium filter with integral powerful pump. The filter is designed for fresh water or marine aquariums from up to 250L - 850L. The BioMaster is designed and engineered in Germany and is packed with innovations to make the task of aquarium filtering as simple and efficient as possible.

The EasyClean pre-filter section can be simply removed for cleaning without the need to disconnect hoses and also features a robust built-in priming button for fast start up after cleaning or upon installation. The BioMaster also contains a series of fine and coarse filter sponges mounted inside the main filter section and 2 layers of OASE Hel-X 13 BioMedia. The combination of foams and bio-media offer superb mechanical and biological filtration and the main filter segment requires infrequent maintenance, thanks to the EasyClean Prefilter.

Optimum filtration: Fine 45 ppi pre-filter sponge (30ppi for Biomaster 850) to optimise mechanical filtration of coarse dirt and prolong the lifespan of biological media
EasyClean prefilter module: No more bothersome dismantling of the filter – simply remove the pre-filter module, rinse and replace
High filter volume: The combination of mechanical and highly effective biological filtration with Hel-X ensures healthy and clear aquarium water
Practical: Venting button for effective water suction to get started quickly and easily during installation and after cleaning
Safe: Shut-off mechanism and safety lock prevent unwanted water leakage, e.g. when removing the pre-filter module
Well-regulated: Control the flow on the filter or via the adapter set
Optional: OASE HeatUp integrated adjustable heater

Technical data for Biomaster 250

Suitable for aquariums up to max.	250L
Dimensions (L x W x H)	240 x 240 x 370mm
Rated voltage	230 V / 50 Hz
Power consumption	15W
Power cable length	1.50m
Net weight	5.10kg
Guarantee	3 years
Max. flow rate	900 L/H
Max. head height, metres	1.30m
Hose (quantity/length)	1 UNIT/4 m
Connection for hoses ø (inner/outer)	16 / 22 mm
Filter volume	4.4L
Pre-filter volume	0.40L
Suitable for freshwater	Yes
Suitable for saltwater	Yes

Technical data for Biomaster 350

Suitable for aquariums up to max.	350L
Dimensions (L x W x H)	240 x 240 x 425mm
Rated voltage	230 V / 50 Hz
Power consumption	18W
Power cable length	1.50m
Net weight	5.40kg
Guarantee	3 + 1 Years
Max. flow rate	1100 L/H
Max. head height, metres	1.40m
Hose (quantity/length)	1 UNIT/4 m
Connection for hoses ø (inner/outer)	16 / 22 mm
Filter volume	5.6L
Pre-filter volume	0.50L
Suitable for freshwater	Yes
Suitable for saltwater	Yes

Technical data for Biomaster 600

Suitable for aquariums up to max.	600L
Dimensions (L x W x H)	240 x 240 x 480mm
Rated voltage	230 V / 50 Hz
Power consumption	22W
Power cable length	1.50m
Net weight	6.40kg
Guarantee	3 Years
Max. flow rate	1250 L/H
Max. head height, metres	1.80m
Hose (quantity/length)	1 UNIT/4 m
Connection for hoses ø (inner/outer)	16 / 22 mm
Filter volume	6.8L
Pre-filter volume	0.60L
Suitable for freshwater	Yes
Suitable for saltwater	Yes

Technical data for Biomaster 850

Dimensions	9.4 x 9.4 x 22 in.
Net Weight	12 lbs.
Rated Voltage	120V / 60 Hz
Power Consumption	25W
Power Cord Length	6 ft.
Max. Flow Rate	400 GPH
Max. Head Height	7.4 ft.
Connection	5/8 in. ID
Tubing Length	13 ft.
Filter Volume	2.1 gallons
Pre-filter Volume	0.16 gallons
Suitable for Max. Aquarium Volume	225 gallons

OASE BioMaster Canister Filter