Thermometers · Stick-on digital strip

Fluval Edge Thermometer

External glass mounting for fresh- or saltwater aquariums; 1.7 in long.

Adhesive vertical thermometer with a 64–86°F display range.

Consider: The display covers 64–86°F. Choose another thermometer if your planned water temperature falls outside that range.

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US version, item 11206. Check what’s in the box before you buy.

Specifications that affect fit

Dimensions
length: 1.7 in

Before choosing this model

  • Place where it is easy to read and away from localized heat.
  • Confirm its range covers the target temperature.

What Fluval doesn’t publish

  • Fluval doesn’t publish how accurate it is. If a reading looks wrong, check it with a second thermometer of known accuracy.

Before you buy, see where to put it and what temperature to aim for.

Check it against your tank → Something not working? See the troubleshooting guide.

Included items & upkeep

  • thermometer

Plan for the routine work

  • Keep the viewing area clean and readable.
  • Cross-check if readings conflict with animal behavior or another instrument.

To budget for replacement media and supplies, use the first-year cost calculator. For how often and how to clean it, follow the maker’s manual.