Fluval FX6
#1 in Over 150 galFull review
The flow king for very large tanks, at the lowest cost per rated gallon. Many owners pair it with a second filter on tanks near its rating.
Amazon $406.99$406.99
Up to 400 gal925 gal/h5.9 L
3.4/5
A premium square canister for tanks up to 160 gallons, with lots of media and thoughtful maintenance features.
- Up to 160 galTank size
- 330 gal/hFlow
- 6.5 LMedia
- 16 WPower
Check price at Amazon$329.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 6.5 L of media plus a separate 0.5 L pre-filter
- Xtender control raises flow as the pads clog, so cleaning can wait a few days
- Self-priming, with a tap unit that only releases with the valves closed
Cons
- Price is high for its flow
- EHEIM publishes its flow and power at 50 Hz only
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 | 2275 |
|---|---|
| Capacity | |
| Rated aquarium | Up to 160 gal |
| Pump output | 330 gal/h |
| Turnover | 2.1x per hour |
| Max head height | 5.9 ft |
| Media | |
| Media volume | 6.5 L |
| Pre-filter volume | 0.5 L |
| Canister volume | 9.2 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 | 16 W |
| Warranty | 3 years |
Alternatives in this tank size
Fluval FX4
#3 in Over 150 galFull review
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 $337.99$337.99
Up to 250 gal700 gal/h3.9 L
OASE BioMaster 2 600
#4 in Over 150 galFull review
A media-heavy filter for tanks up to 160 gallons, for owners who value biological capacity over raw flow.
Amazon $334.99$334.99
Up to 160 gal350 gal/h6.8 L
Compare
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