Aquarium Filters · owner-verdict comparison

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

Real owners lean toward the Fluval 407 Canister Filter: 75% of 56 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 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 →

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 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 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 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 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 Canister Filter vs AquaClear 70 Power Filter: frequently asked questions

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

Real owners lean toward the Fluval 407 Canister Filter: 75% of 56 owners recommend it, vs 45% of 22 for the AquaClear 70 Power Filter.

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 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 Canister Filter is expensive unless bought on sale. 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.