Aquarium Filters · owner-verdict comparison

Fluval 407 Canister Filter vs Fluval FX6: what real owners say

Real owners rate these about evenly: 75% of 56 Fluval 407 Canister Filter owners recommend it, vs 77% of 349 for the Fluval FX6.

Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score

Fluval 407 Canister Filter

75%of 56 owners recommend
75% recommend · 11% neutral · 14% don't
Owners praise
  • Runs whisper-quiet, often inaudible unless you touch it
  • Tons of media space and fully customizable filtration
  • Strong flow keeps water crystal clear
Owners complain about
  • Expensive unless bought on sale
Full owner report →

Fluval FX6

77%of 349 owners recommend
77% recommend · 8% neutral · 15% don't
Owners praise
  • Keeps water crystal clear
  • Huge media capacity and powerful flow for big tanks
  • Long intervals between cleanings
Owners complain about
  • Expensive, especially next to SunSun
  • Large, needs a tall cabinet or floor clearance
  • Finicky to prime and gurgles when not below water level
Full owner report →

Which should you buy?

Get the Fluval 407 Canister Filter if
  • ✓Owners of medium-to-large tanks (50-100 gallons)
  • ✓Aquarists wanting quiet, near-silent filtration
  • ✓Hobbyists wanting lots of customizable media space
  • ✓Buyers valuing easy setup and priming
Skip it if
  • Shoppers on a tight budget, since it runs pricey
  • Those wanting flexible, easy-to-route hoses
Get the Fluval FX6 if
  • ✓Large-tank owners from 75 gallons up to 400
  • ✓Turtle and messy-fish keepers needing heavy filtration
  • ✓People wanting months between filter cleanings
  • ✓Owners prioritizing quiet operation and replaceable parts
Skip it if
  • Budget shoppers who find SunSun good enough
  • Small tanks where the flow overwhelms fish

What Fluval 407 Canister Filter owners say

“Best filter i have had”
— @glennryan6655 on YouTube
“Works great”
— @terjehimle3107 on YouTube
“i have a 407, it can be a pain in my ass. cleaning it is such a hassle lol, but i have found everything has to be set PERFECTLY in it or it wont run at 100%”
— pxyton- on Reddit

What Fluval FX6 owners say

“I use fx6 on my bowl betta tank and his happy.”
— @linslins4860 on YouTube
“I have an fx6 running on my tank and it’s the best I have ever used.”
— @MrBertie1982 on YouTube
“If it wasn’t for all those screws just to open it…”
— @deShadua on YouTube

Fluval 407 Canister Filter vs Fluval FX6: frequently asked questions

Is the Fluval 407 Canister Filter or the Fluval FX6 better?

Real owners rate these about evenly: 75% of 56 Fluval 407 Canister Filter owners recommend it, vs 77% of 349 for the Fluval FX6.

Who should get the Fluval 407 Canister Filter?

Owners point the Fluval 407 Canister Filter at owners of medium-to-large tanks (50-100 gallons), and aquarists wanting quiet, near-silent filtration.

Who should get the Fluval FX6?

Owners point the Fluval FX6 at large-tank owners from 75 gallons up to 400, and turtle and messy-fish keepers needing heavy filtration.

What do owners complain about?

The most-cited downside of the Fluval 407 Canister Filter is expensive unless bought on sale. For the Fluval FX6, it's expensive, especially next to SunSun.