Fluval 207
#1 in Up to 75 galFull review
A strong value for 20 to 45 gallon tanks: generous media space and low power draw at about the price of the smaller 107.
Amazon $153.94$153.94
The Fluval 207 is the better aquarium canister filter overall, rated 3.9 to 3.7. The Fluval 207 leads on turnover, efficiency and media volume. The OASE BioMaster 2 250 wins on features. The Fluval 207 costs $76.05 less ($153.94 vs $229.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
OASE BioMaster 2 250
#2 in Up to 75 galFull review
A convenient, well-built filter for tanks up to 70 gallons, at its best for owners who want a quick-rinse pre-filter.
Amazon $229.99$229.99
Which should you buy?
- Choose the Fluval 207 for turnover (206 gal/h for up to 45 gal, 4.6x per hour vs 250 gal/h for up to 70 gal, 3.6x per hour), efficiency (20.6 gal/h per watt (10 W) vs 16.7 gal/h per watt (15 W)) and media volume (3.1 L of media, 0.7 L per 10 rated gal vs 4.4 L of media, 0.6 L per 10 rated gal).
- Choose the OASE BioMaster 2 250 for features (priming button or self-priming, shutoff valves, separate pre-filter, adjustable flow vs priming button or self-priming, shutoff valves, separate pre-filter).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 75 gal aquarium canister filter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fluval 207 | OASE BioMaster 2 250 |
|---|---|---|
| Overall rating | 3.9/5 | 3.7/5 |
| Value 25% | 31 $3.42 per rated gallon ($153.94, up to 45 gal) | 34 $3.29 per rated gallon ($229.99, up to 70 gal) |
| Media volume 20% | 98 3.1 L of media, 0.7 L per 10 rated gal | 87 4.4 L of media, 0.6 L per 10 rated gal |
| Turnover 20% | 88 206 gal/h for up to 45 gal, 4.6x per hour | 59 250 gal/h for up to 70 gal, 3.6x per hour |
| Efficiency 10% | 91 20.6 gal/h per watt (10 W) | 67 16.7 gal/h per watt (15 W) |
| Features 15% | 70 priming button or self-priming, shutoff valves, separate pre-filter | 85 priming button or self-priming, shutoff valves, separate pre-filter, adjustable flow |
| Warranty 10% | 50 3-year warranty | 50 3-year warranty |
Specifications
| Fluval 207 | OASE BioMaster 2 250 | |
|---|---|---|
| Capacity | ||
| Rated aquarium | 20-45 gal | Up to 70 gal |
| Pump output | 206 gal/h | 250 gal/h |
| Filter circulation | 121 gal/h | - |
| Turnover | 4.6x per hour | 3.6x per hour |
| Max head height | 4.8 ft | 5.6 ft |
| Media | ||
| Media volume | 3.1 L | 4.4 L |
| Pre-filter volume | - | 0.4 L |
| Canister volume | 5.3 L | - |
| Features | ||
| Primer | Yes | Yes |
| Shutoff valves | Yes | Yes |
| Separate pre-filter | Yes | Yes |
| Adjustable flow | - | Yes |
| Built-in UV | No | No |
| Built-in heater | No | No |
| Water-change valve | No | No |
| Power and build | ||
| Power draw | 10 W | 15 W |
| Warranty | 3 years | 3 years |