Fluval 407 vs SunSun HW-304B

Last updated: November 9, 2026

The Fluval 407 is the better aquarium canister filter overall, rated 3.7 to 3.0. The Fluval 407 leads on features and turnover. The SunSun HW-304B wins on value. The SunSun HW-304B costs $89.50 less ($167.49 vs $256.99).

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Fluval 407 vs SunSun HW-304B

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every 76 to 150 gal aquarium canister filter; a clear win is highlighted. How we rank explains each one.

Factor weightFluval 407SunSun HW-304B
Overall rating3.7/53.0/5
Value 25%47 $2.57 per rated gallon ($256.99, up to 100 gal)94 $1.12 per rated gallon ($167.49, up to 150 gal)
Media volume 20%82 6 L of media, 0.6 L per 10 rated gal0 media volume not published, scored as none
Turnover 20%67 383 gal/h for up to 100 gal, 3.8x per hour57 525 gal/h for up to 150 gal, 3.5x per hour
Efficiency 10%67 16.7 gal/h per watt (23 W)50 power draw not published (neutral score used)
Features 15%70 priming button or self-priming, shutoff valves, separate pre-filter15 built-in UV, heater or water-change valve
Warranty 10%50 3-year warranty0 warranty not published, scored as none

Specifications

Fluval 407SunSun HW-304B
Capacity
Rated aquarium50-100 galUp to 150 gal
Pump output383 gal/h525 gal/h
Filter circulation245 gal/h-
Turnover3.8x per hour3.5x per hour
Max head height7 ft-
Media
Media volume6 L-
Canister volume9.2 L-
Features
PrimerYes-
Shutoff valvesYes-
Separate pre-filterYes-
Built-in UVNoYes
Built-in heaterNo-
Water-change valveNo-
Power and build
Power draw23 W-
Warranty3 years-

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