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
20-45 gal206 gal/h3.1 L
3.7/5
A convenient, well-built filter for tanks up to 70 gallons, at its best for owners who want a quick-rinse pre-filter.
- Up to 70 galTank size
- 250 gal/hFlow
- 4.4 LMedia
- 15 WPower
Check price at Amazon$229.99
Price checked November 8, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 4.4 L of media plus an EasyClean pre-filter that lifts out on its own
- Priming button and detachable aquastop
- Room to add OASE’s HeatUp heater inside the canister
Cons
- Pricier than a Fluval 307 with similar media space
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 (this one) | 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 | 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 2 250 |
|---|---|
| Capacity | |
| Rated aquarium | Up to 70 gal |
| Pump output | 250 gal/h |
| Turnover | 3.6x per hour |
| Max head height | 5.6 ft |
| Media | |
| Media volume | 4.4 L |
| Pre-filter volume | 0.4 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 | 15 W |
| Warranty | 3 years |
Alternatives in this tank size
Fluval 107
#3 in Up to 75 galFull review
A small, quiet canister for 10 to 30 gallon tanks. The 207 costs about the same and holds more media, so the 107 makes most sense where cabinet space is tight.
Amazon $152.99$152.99
10-30 gal145 gal/h2 L
EHEIM Classic 250 (2213)
#4 in Up to 75 galFull review
A proven, low-cost canister for tanks of 30 to 55 gallons. Flow is gentle, which suits planted tanks and slow-moving fish.
Amazon $144.99$144.99
Up to 66 gal116 gal/h3 L
Compare
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