Fluval
Fluval FX6 Canister Filter
$369.99
Best Aquarium Filters · head-to-head
Fluval FX6 Canister Filter vs SunSun HW-304B Canister Filter with UV Sterilizer
A sourced, side-by-side comparison. SunSun HW-304B Canister Filter with UV Sterilizer is cheaper at $178.99. Every spec and price links to its source.
SunSun
SunSun HW-304B Canister Filter with UV Sterilizer
$178.99Cheaper
Which is better: the Fluval FX6 Canister Filter or SunSun HW-304B Canister Filter with UV Sterilizer?
On the specs we track, they're closely matched. The SunSun HW-304B Canister Filter with UV Sterilizer is the cheaper at $178.99.
See Fluval FX6 Canister Filter on Amazon See SunSun HW-304B Canister Filter with UV Sterilizer on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Fluval FX6 Canister Filter | SunSun HW-304B Canister Filter with UV Sterilizer |
|---|---|---|
| US price | $369.99 | $178.99 |
| Brand | Fluval | SunSun |
| Released | — | — |
| Type | canister | canister |
| Flow rate gph | 925 | 525 |
| Tank size gal | 400 | 150 |
| Media capacity (L) | 5.9 | — |
| Media stages | 3 | 5 |
| Wattage | 43 | 55 |
| Self priming | Yes | Yes |
| Dimensions (in) | 15.75 x 15.75 x 20.8 | 11 x 11 x 17 |
Sources — Fluval FX6 Canister Filter: fluvalaquatics.com (verified 2026-08-01). SunSun HW-304B Canister Filter with UV Sterilizer: mingllc.com (verified 2026-08-01).
What's the difference between the Fluval FX6 Canister Filter and SunSun HW-304B Canister Filter with UV Sterilizer?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Flow rate gph: Fluval FX6 Canister Filter 925 vs SunSun HW-304B Canister Filter with UV Sterilizer 525
- Tank size gal: Fluval FX6 Canister Filter 400 vs SunSun HW-304B Canister Filter with UV Sterilizer 150
- Media stages: Fluval FX6 Canister Filter 3 vs SunSun HW-304B Canister Filter with UV Sterilizer 5
- Wattage: Fluval FX6 Canister Filter 43 vs SunSun HW-304B Canister Filter with UV Sterilizer 55
- Dimensions (in): Fluval FX6 Canister Filter 15.75 x 15.75 x 20.8 vs SunSun HW-304B Canister Filter with UV Sterilizer 11 x 11 x 17