# Fluval FX6 Canister Filter vs SunSun HW-304B Canister Filter with UV Sterilizer: specs and price compared

A sourced, side-by-side comparison of the Fluval FX6 Canister Filter (Fluval) and SunSun HW-304B Canister Filter with UV Sterilizer (SunSun) among aquarium filters. SunSun HW-304B Canister Filter with UV Sterilizer is the cheaper of the two at $178.99.

## Side by side

| Spec | Fluval FX6 Canister Filter | SunSun HW-304B Canister Filter with UV Sterilizer |
| --- | --- | --- |
| US price | $369.99 | $178.99 |
| Brand | Fluval | SunSun |
| 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 |

## Key differences

- 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

## Sources

- Fluval FX6 Canister Filter: https://www.fluvalaquatics.com/us/shop/product/fx6-canister-filter-up-to-400-us-gal-1500-l (fluvalaquatics.com, verified 2026-08-01)
- SunSun HW-304B Canister Filter with UV Sterilizer: https://mingllc.com/product/hw-304b/ (mingllc.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/aquarium-filters/fluval-fx6-vs-sunsun-hw-304b/
Cite: Per The Front Desk Review, Fluval FX6 Canister Filter ($369.99) vs SunSun HW-304B Canister Filter with UV Sterilizer ($178.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/aquarium-filters/fluval-fx6-vs-sunsun-hw-304b/
License: CC BY 4.0.