Aquariums · owner-verdict comparison

Fluval 407 Performance Canister Filter vs AquaClear 70 Power Filter: what real owners say

Real owners lean toward the Fluval 407 Performance Canister Filter: 74% of 19 owners recommend it, vs 45% of 22 for the AquaClear 70 Power Filter.

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

Fluval 407 Performance Canister Filter

74%of 19 owners recommend
74% recommend · 10% neutral · 16% don't
Owners praise
  • Handles large tanks with ease — owners run it successfully on 75-200 gallon/liter setups and praise the flow and capacity
  • Long-term reliability — owners report years of use (one 2 years, another 6 years) with no issues and crystal clear water
  • Preferred over other canister filters, including other Fluval models, and described as easier to deal with
Owners complain about
  • A recurring gurgling/hissing air-in-line noise that's hard to permanently fix — owners cycle through hose swaps, plumber's tape, and repositioning the unit with mixed results
Full owner report →

AquaClear 70 Power Filter

45%of 22 owners recommend
45% recommend · 41% neutral · 14% don't
Owners praise
  • Widely regarded as the best hang-on-back filter on the market, with several owners switching from brands like Aqueon and saying they'll never go back
  • Extremely reliable and long-lasting, with some units still running decades after purchase (one owner still runs an AquaClear 70 from 1990)
Owners complain about
  • Can be finicky to restart after a power outage or once the impeller gets dirty, sometimes needing repriming or grinding/failing to cycle water at all
  • Outflow is quite strong out of the box and often needs configuring to tame, with a few owners removing it from planted tanks because it was blasting their plants
Full owner report →

Which should you buy?

Get the Fluval 407 Performance Canister Filter if
  • ✓Owners of 75-125 gallon tanks needing strong, reliable long-term flow
  • ✓Fishkeepers who want a quiet canister that runs untouched for years
  • ✓Anyone upgrading from sponge filters who wants more media/customization options
  • ✓Owners willing to do occasional foam-only maintenance rather than full teardowns
Skip it if
  • Owners who prioritize easy restarts/priming, since restart and airlock issues recur
  • Anyone put off by build quality gripes like the aqua-stop valve and top clamps
Get the AquaClear 70 Power Filter if
  • ✓Owners who want a customizable media chamber, similar to a canister filter but cheaper
  • ✓Planted or reef HOB setups running refugium media like chaeto, floss, and purigen
  • ✓Aquarists prioritizing reliable long-term mechanical and biological filtration over years of use
  • ✓Tanks needing strong flow and surface agitation, like sponge- or gravel-based freshwater setups
Skip it if
  • Owners intolerant of occasional repriming or restarting after power interruptions
  • Delicate planted tanks where strong outflow can damage or uproot plants

What Fluval 407 Performance Canister Filter owners say

“This is the filter I use. I love it.”
— Phyth_LL_ment on Reddit
“Did own a fluval407, real quiet filter with lots of potential.”
— Proof-Astronomer7733 on Reddit
“I do not recommend the Fluval simply due to their aqua-stop valve being poorly made and their clamps that hold the top down are not ideal either.”
— SigmaLance on Reddit

What AquaClear 70 Power Filter owners say

“I still have an old AquaClear70 from 1990 that I still run”
— TheBlackStache on Reddit
“it works great but the flow is pretty strong”
— DFlyLoveHeart42 on Reddit
“Ran it completely empty, i.e. no filter media or sponge, and it still shut off randomly.”
— ElizzaBum on Reddit

Fluval 407 Performance Canister Filter vs AquaClear 70 Power Filter: frequently asked questions

Is the Fluval 407 Performance Canister Filter or the AquaClear 70 Power Filter better?

Real owners lean toward the Fluval 407 Performance Canister Filter: 74% of 19 owners recommend it, vs 45% of 22 for the AquaClear 70 Power Filter.

Who should get the Fluval 407 Performance Canister Filter?

Owners point the Fluval 407 Performance Canister Filter at owners of 75-125 gallon tanks needing strong, reliable long-term flow, and fishkeepers who want a quiet canister that runs untouched for years.

Who should get the AquaClear 70 Power Filter?

Owners point the AquaClear 70 Power Filter at owners who want a customizable media chamber, similar to a canister filter but cheaper, and planted or reef HOB setups running refugium media like chaeto, floss, and purigen.

What do owners complain about?

The most-cited downside of the Fluval 407 Performance Canister Filter is a recurring gurgling/hissing air-in-line noise that's hard to permanently fix — owners cycle through hose swaps, plumber's tape, and repositioning the unit with mixed results. For the AquaClear 70 Power Filter, it's can be finicky to restart after a power outage or once the impeller gets dirty, sometimes needing repriming or grinding/failing to cycle water at all.