A premium square canister for tanks up to 160 gallons, with lots of media and thoughtful maintenance features.
Amazon $329.99
A media-heavy filter for tanks up to 160 gallons, for owners who value biological capacity over raw flow.
- Up to 160 galTank size
- 350 gal/hFlow
- 6.8 LMedia
- 23 WPower
Price checked November 8, 2026. As an Amazon Associate we earn from qualifying purchases.
- 6.8 L of media and a separate pre-filter
- Priming button, aquastop and flow control
- Turnover is modest for a 160 gallon rating
The OASE BioMaster 2 family
Every OASE BioMaster 2 model we rank, smallest first. Ratings compare each against its own tank size.
| Model | Tank size | Rating | Price |
|---|---|---|---|
| OASE BioMaster 2 250 | Up to 70 gal | 3.7/5 | $229.99 |
| OASE BioMaster 2 350 | Up to 90 gal | 3.7/5 | $249.99 |
| OASE BioMaster 2 600 (this one) | Up to 160 gal | 3.3/5 | $334.99 |
| OASE BioMaster 2 850 | Up to 225 gal | 3.3/5 | $379.99 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its tank size. How we rank explains each one.
Specifications
| Model number | BioMaster 2 600 |
|---|---|
| Capacity | |
| Rated aquarium | Up to 160 gal |
| Pump output | 350 gal/h |
| Turnover | 2.2x per hour |
| Max head height | 6.6 ft |
| Media | |
| Media volume | 6.8 L |
| Pre-filter volume | 0.6 L |
| Features | |
| Primer | Yes |
| Shutoff valves | Yes |
| Separate pre-filter | Yes |
| Adjustable flow | Yes |
| Built-in UV | No |
| Built-in heater | No |
| Water-change valve | No |
| Power and build | |
| Power draw | 23 W |
| Warranty | 3 years |
Alternatives in this tank size
A powerful, efficient filter for big tanks, with a handy water-change valve. Treat the 250 gallon rating as generous and size by media need.
Amazon $337.99The most media in one canister here. On tanks near 225 gallons, add a powerhead for flow.
Amazon $379.99Compare
Compare the OASE BioMaster 2 600 with any other aquarium canister filter →
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