OASE BioMaster 850

Sale price$583.99
In stock


Oase BioMaster 850 External Aquarium Filter (Without Heater)
Ideal for use in aquariums up to 225 gallons.

Heater integration capability
Easily integrate an OASE HeatUp 400 adjustable heater into the BioMaster canister (HeatUp not included)

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

Fresh and marine
Compatible with both fresh and saltwater aquariums

Quiet operation
Sound dampening design

Backed by the best warranty in the industry!
3 year warranty plus 1 year warranty extension with online registration!

All Oase products are fully in compliance with Canadian electrical safety standards and are cULs certified!

What’s in the Box?
Aquarium Filter, six carbon pre-filter foams, one 30 ppi filter foam, four 20 ppi filter foams, two units of 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

Made in Italy, backed by German engineering
How to choose the right filter for your tank?
Here is a great video by Green Aqua to help you with that!

Dimensions  9.4 x 9.4 x 22H in.
Net Weight  15 lbs.
Rated Voltage  120V / 60 Hz
Power Consumption of the Filter  25 Watts
Power Consumption of the Heater (HeatUp 400 Not included)  400 Watts (Sold Separately)
 Power Cord Length  6 ft.
Max. Flow Rate  400 GPH
Max. Head Height  7.4 ft.
Connection  5/8 in. ID  (16/22 mm)
Tubing Length  13 ft.
Filter Volume  2.1 Gallons
Pre-filter Volume  0.16 Gallons
Suitable for Max. Aquarium Volume  225 Gallons
Box Weight and Dimensions  15 x 12 x 23.5H in at 19 lbs.

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