OASE BioMaster 2 250 Canister Filter
- Tanks up to 70 gallons
- Sealed 4-stage filtration path
- EasyClean pre-filter
- Spill locks and detachable aquastop
- 9.4 x 9.4 x 14.6 inches
- 4-year warranty with registration
Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A compact canister for mid-size tanks that brings big-filter features, including a lift-out pre-filter, to smaller setups. Flow in liters per hour is not clearly listed, so check it against your stocking.
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ASIN: B0F3LN7ZBGModel: BioMaster 2 250Category: Aquarium Filters
Overview
Setting up a canister on a mid-size tank without crowding the stand is what this OASE BioMaster does. You run the curved inlet and outlet, adjust flow at the spray bar, and pull the pre-filter for cleaning while the main media stays sealed.
Low-mess maintenance in a short canister that fits under most stands is what mid-size tank owners gain. Optional heater space removes gear from the tank. The flow figure in the specs is not usable, so the real turnover is unknown.
Who it's for
Planted, community and small marine tanks in the mid range suit it. Owners of very large tanks should choose a bigger model in the series.
Pros and cons
- Short canister fits under stands
- Pre-filter lifts out separately
- Sealed media path
- Full set of fittings
- Flow rate not clearly listed
- Heater sold or included unclear
- Ongoing foam and carbon replacement
Performance notes
Turnover depends on pump output after tubing and head height, which this listing does not state clearly. A clean pre-filter holds flow up and protects the main foams. Media stages handle debris, waste breakdown and odor in sequence.
Specifications
| Brand | OASE |
|---|---|
| Model | BioMaster 2 250 |
| Dimensions & fit | |
| Tank size | Up to 70 gallons, freshwater and saltwater |
| Item dimensions | 9.4 x 9.4 x 14.6 inches |
| Item Dimensions L X W X H | 9.4"L x 9.4"W x 14.6"H |
| Capacity & performance | |
| Maximum Flow Rate | 70 gpm |
| Upper Temperature Rating | 28 °C |
| Construction & materials | |
| Material Type | Plastic |
| Compatibility & installation | |
| Installation Type | Freestanding canister |
| Included components | |
| Included Components | Curved inlet and outlet tubes, inlet strainer, outlet nozzle, spray bar with flow control, tubing, heater adapter, 6 ft power cord |
| Unit Count | 1 Count |
| Warranty & support | |
| Warranty | 4 years (3 + 1 with online registration) |
| Supported Water TDS Level Maximum PPM | 300 |
| Other details | |
| Filtration | 4-stage: fine and coarse foams, Hel-X biomedia, activated carbon |
| Heater | HeatUp heater integrates (heater adapter included) |
| Pre filter | EasyClean removable module |
| Other Special Features Of The Product | Heavy Duty |
| Purification Method | Activated Carbon, Ultra Filtration |
Frequently asked questions
Will the OASE BioMaster 2 250 work on a reef tank?
It is made for freshwater and saltwater aquariums up to 70 gallons.
How tall is the OASE BioMaster 2 250?
It measures 9.4 x 9.4 x 14.6 inches.
Can I move the OASE BioMaster without disconnecting the tubing?
Yes. The aquastop is detachable, so the filter can be moved without affecting the tubing setup.
Is the OASE BioMaster 2 250 a hang-on filter?
No. It is a freestanding external canister filter.