Description
OASE BioMaster 850
- EasyClean pre-filter module – Module can be removed separately from the rest of the filter. This reduces maintenance, increases filter efficiency, and extends the life of main filter foams. Customize the pre-filter with coarse 30 ppi, fine 45 ppi, ultra-fine 60 ppi, and activated carbon 45 ppi filter foams
- No mess maintenance – Integrated safety locking features on the handle, pre-filter, and check valve in the inlet/outlet connection unit, ensure no accidental spillage or messy maintenance
- Sealed filtration pathways – Allows for the full benefits of all four stages of filtration through this intuitive design
- Hel-X Biomedia – An extremely large protected settlement surface (800m²/1000 liter) that allows beneficial bacteria to grow and thrive. The material is designed to stop floating as soon as it reaches a certain level of bacteria colonization.
- Carbon pre-filter foams – Activated carbon absorbs unwanted substances in aquarium water. Carbon filter foams make replacement much simpler than using common granular carbon
- Adjustable flow control – Flow can be adjusted for the inlet and outlet in multiple locations on the filter assembly
- Easy priming – Includes simple priming for fast and easy startup and continued operation
- Quiet operation – Sound dampening design
- Heater integration capability – Easily integrate an OASE HeatUp 400 adjustable heater into the BioMaster canister (HeatUp not included)
- Ideal for use in aquariums up to 225 gallons
- Made in Italy, backed by German engineering
- Fresh and marine water compatible
- UL certified filter
- 3 year warranty plus 1 year warranty extension with online registration
Key Features
- EasyClean pre-filter chamber for extremely simple filter cleaning and top comfort
- Available with or without integrated HeatUp adjustable heater for undisturbed views of the underwater world without visible technology, optimum temperature level, improved safety
- Perfect water quality thanks to the high filter volume consisting of Hel-X and filter sponges
- Optimum filtration: Fine 45 ppi pre-filter sponge 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
- Optional: Includes HeatUp integrated adjustable heater with BioMaster Thermo – can also be retrofitted
- 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
What’s in the box
OASE BioMaster 250 Canister Filter Box contains Aquarium Filter, four carbon pre-filter foams, one 20 ppi filter foam, two 30 ppi filter foams, Hel-X Biomedia, intake tube with inlet strainer, water distributor nozzle, spray bar, inlet and outlet adapters with flow control, tubing, fittings, heater adapter, and power cable
OASE Bio Master Model Comparison
Bio Master | 250 | 350 | 600 | 850 |
Power consumption | 15 W | 18 W | 22 W | 25 W |
Max. flow rate | 900 l/h | 1100 l/h | 1250 l/h | 1550 l/h |
Filter volume | 4.4 l | 5.6 l | 6.8 l | 8 l |
Pre-filter volume | 0.40 l | 0.50 l | 0.60 l | 0.60 l |
Number | 42733 | 42734 | 42735 | 77106 |
Verified review - view original
Oase 850 is working very well. Bought this as the old sunsun 304 filter developed leakage. Pre filter option adds to ease of maintenance.
Best filter out of all the filters . Very quite, pre filter feature is very convenient to use .good water output for 32 watts impeller..satisfied with the beast. Good packaging done by the aquazone ,received it in perfect condition.thank you aqua zone . 👍