# Fluval FX6 Canister Filter: specs and price

**Price (US):** $369.99 at fluvalaquatics.com (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. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 6 aquarium filters we track it is the most expensive; category median $189.
**Brand:** Fluval
**Deskmark:** Platinum Deskmark — pay-blind category standing 90/100, #1 of 14 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $369.99 |
| Brand | Fluval |
| Type | canister |
| Flow rate gph | 925 |
| Tank size gal | 400 |
| Media capacity (L) | 5.9 |
| Media stages | 3 |
| Wattage | 43 |
| Self priming | Yes |
| Dimensions (in) | 15.75 x 15.75 x 20.8 |

## Where it stands

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.

## 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.

Source: https://www.fluvalaquatics.com/us/shop/product/fx6-canister-filter-up-to-400-us-gal-1500-l (fluvalaquatics.com, accessed 2026-08-01)
Corroboration: https://www.aquariumsource.com/fluval-fx6-canister-filter-review/ (accessed 2026-08-01)
Canonical: https://frontdeskreview.com/product/aquarium-filters/fluval-fx6/
Cite: Per The Front Desk Review, the Fluval FX6 Canister Filter price of record was $369.99 as of 2026-08-01 — https://frontdeskreview.com/product/aquarium-filters/fluval-fx6/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl