Aqueon Pro 50 vs Aqueon Pro 100

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)

Both fit by the makers’ ratings.

  • Aqueon Pro 50: Rated for a 20 gal tank.
  • Aqueon Pro 100: Rated for a 20 gal tank.

What changes for you

  • Tank size: the Aqueon Pro 50 is rated up to 20 US gal, the Aqueon Pro 100 15–40 US gal.
  • Power: 50 W against 100 W. More watts heats more water or a bigger rise above room temperature; check the maker's chart for your room.
  • Size: Aqueon Pro 50 9 in long, Aqueon Pro 100 10.5 in long. Check it fits your tank’s water depth at the angle you mount it.

Next: Aqueon Pro 50: details and fit · Aqueon Pro 100: details and fit · All heaters for your tank

Aqueon Pro 50

Aqueon Pro 100

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

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Aqueon Pro 50

Manufacturer-rated for aquariums up to 20 US gal; adjustable 68–88°F.

Aqueon Pro 100

Aqueon rates it for tanks up to 40 gallons; its manual gives 15 to 40.

Side by side

Aqueon Pro 50 vs Aqueon Pro 100: published specifications
Published figureAqueon Pro 50Aqueon Pro 100
Rated tank sizeUp to 20 US gal15–40 US gal
Power50 W100 W
Dimensions1.5 × 1.75 × 9 in (L × W × H)1.5 × 1.75 × 10.5 in (L × W × H)
In the boxheater, suction cupsheater, suction cups

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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