Fluval 107 vs Fluval 307

What changes for you, from the makers' published figures. Neither is "better": the right one is the one that fits your tank and how you look after it.

For a 20 gallon long (example)

Only the Fluval 107 fits by its maker’s rating.

  • Fluval 107: Rated for a 20 gal tank.
  • Fluval 307: Rated 40–70 gal, not 20 gal.

What changes for you

  • Tank size: the Fluval 107 is rated 10–30 US gal, the Fluval 307 40–70 US gal.
  • Flow: Fluval 107 145 GPH pump output (95 GPH through the filter), Fluval 307 303 GPH (206 GPH). More flow suits bigger or messier tanks; bettas and shrimp prefer less.
  • Power: 10 W against 16 W, which changes the running cost.
  • Size: Fluval 107 13.7 in tall, Fluval 307 16.5 in tall; a canister also needs room for hoses and to lift the lid in the cabinet.

Next: Fluval 107: details and fit · Fluval 307: details and fit · All filters for your tank

Fluval 107

Fluval 307

Both drawn at one scale on a 20 gallon long (example), from the makers’ published dimensions; positions are approximate.

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Side by side

Fluval 107 vs Fluval 307: published specifications
Published figureFluval 107Fluval 307
Rated tank size10–30 US gal40–70 US gal
Pump output145 GPH303 GPH
Flow through the filter95 GPH206 GPH
Power10 W16 W
Dimensions7.5 × 7 × 13.7 in (L × W × H)9.5 × 7 × 16.5 in (L × W × H)
In the boxribbed hosing, intake assembly, output nozzle, media basketsribbed hosing, intake assembly, output nozzle, media baskets

Figures as published by each maker; see each model’s page for its sources. Open this pair in the full comparison tool →

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