The Front Desk Review

Fluval · Updated August 2026

Fluval FX6 Canister Filter: price & specs

Fluval FX6 Canister Filter. Every price and spec below is linked to its source and dated — no guesses.

Source: fluvalaquatics.com verified ✓ corroborated verify in ledger

PlatinumDeskmark90/100#1 of 14 in class

The Fluval FX6 Canister Filter is listed at $369.99 on fluvalaquatics.com as of 2026-08-01, the most expensive aquarium filters (median $189); other retailers may be lower. It earns a Platinum Deskmark — 90/100 pay-blind standing, #1 of 14 in class.

Verified Aug 1, 2026 · figures linked to their source in the table below

Cheapest aquarium filters: AquaClear 70 Power Filter — $79.99

See Fluval FX6 Canister Filter on Amazon Live price at the store — may differ from the dated listed price above. As an Amazon Associate we earn from qualifying purchases.
Fluval FX6 Canister Filter — Fluval
Image: fluvalaquatics.com (© Fluval)

Is the Fluval FX6 Canister Filter a good buy?

At $370, the Fluval FX6 Canister Filter is the most expensive of the 6 aquarium filters we track, where the median is $189. On the spec sheet, its flow rate gph of 925 is the highest of the 14, its tank size gal of 400 is the highest of the 14, and its media stages of 3 is the lowest of the 9.

Specifications

Price (US)$369.99 Aquariums Direct USA (aquariumsdirectusa.com) lists the FX6 at $369.99 (shown as out of stock at the time fetched); no MSRP is published on Fluval's own product page. Aquarium Source's independent review cites a different retailer at $404.39, so street price visibly fluctuates; the lower, more MSRP-like figure was used.
BrandFluval
Released—
Typecanister
Flow rate gph925
Tank size gal400
Media capacity (L)5.9
Media stages3
Wattage43
Self primingYes
Dimensions (in)15.75 x 15.75 x 20.8

Source: fluvalaquatics.com (verified 2026-08-01) · corroborated by aquariumsource.com. Fluval's official US product page states verbatim: pump output "925 US GPH / 3500 LPH", filter circulation "563 US GPH / 2130 LPH", tank size "up to 400 US gallons (1,500 L)", media basket volume "1.5 gallons (5.9 L)", power "43W (120V/60Hz)", dimensions "15.75in L x 15.75in W x 20.8in H", and self-starting Smart Pump operation ("just add water, plug in and Smart Pump will take over") — used here for type, flow_rate_gph (pump output), tank_size_gal, media_capacity_l, media_stages (mechanical/chemical/biological named as the multi-stage system), wattage, self_priming, and dimensions_in. Aquarium Source's review independently corroborates the 925/563 GPH split, "up to 400 gallons", "15 x 15 x 20 inches", and "5.9 liters" media capacity, while noting the manufacturer's advertised 925 GPH is optimistic versus real-world 563 GPH — both figures are Fluval's own, so 925 (pump output) was kept for consistency with how flow_rate_gph is defined across this dataset. No verbatim USD MSRP appears on Fluval's page; priceUsd/priceNote draw on two retailers instead.

Is the Fluval FX6 Canister Filter worth it vs cheaper aquarium filters?

Fluval FX6 Canister Filter against its closest cheaper and pricier aquarium filters on the specs that matter — every value sourced. See all 6 ranked

ProductPriceTypeFlow rate gphTank size galMedia capacity (L)Media stages
Fluval FX6 Canister Filter this$369.99canister9254005.93
Fluval FX4 Canister Filter$333.04canister7002503.93

Frequently asked questions

How much does the Fluval FX6 Canister Filter cost?

The Fluval FX6 Canister Filter has a US price of $369.99 (Aquariums Direct USA (aquariumsdirectusa.com) lists the FX6 at $369.99 (shown as out of stock at the time fetched); no MSRP is published on Fluval's own product page. Aquarium Source's independent review cites a different retailer at $404.39, so street price visibly fluctuates; the lower, more MSRP-like figure was used.), as of 2026-08-01.

How does the Fluval FX6 Canister Filter compare on price?

At $370, the Fluval FX6 Canister Filter is the most expensive of the 6 aquarium filters we track, where the median is $189.

What are the Fluval FX6 Canister Filter's key specs?

Fluval FX6 Canister Filter (Fluval): type canister, flow rate gph 925, tank size gal 400, media capacity l 5.9, media stages 3. Full sourced spec sheet verified 2026-08-01.

Price of record: $369.99 at fluvalaquatics.com, 2026-08-01. Other retailers may be lower — check the current price:

See Fluval FX6 Canister Filter on Amazon As an Amazon Associate we earn from qualifying purchases.

Similar aquarium filters

Nearest in price — swipe to browse. Every pick sourced and dated.

All aquarium filters ranked · Open data & methodology · Queryable via MCP

Compare with

Head-to-head

Cheaper aquarium filters

More from Fluval

Related categories