Aqua One External Thermometer

The Aqua One External Thermometer is a simple, reliable way to monitor aquarium temperature without placing equipment inside the tank. This stick-on, colour-changing thermometer attaches to the outside of the glass and provides a clear visual temperature reading in both Celsius and Fahrenheit.

Using a thermochromic colour strip, the thermometer displays the current water temperature instantly, with no electronics, batteries, or probes required. Ideal for freshwater and marine aquariums, it offers a low-profile, maintenance-free solution for everyday temperature monitoring.

 

Key Benefits

• External placement keeps equipment out of the aquarium

• No batteries or electronics required

• Easy-to-read colour-changing temperature scale

• Displays both Celsius and Fahrenheit readings

• Suitable for freshwater and marine aquariums

 

Core Features

• External stick-on design: Attaches securely to the outside of aquarium glass

• Colour-changing temperature strip: Provides an instant visual indication of temperature

• Dual temperature scale: Clearly marked in °C and °F

• Slim, unobtrusive profile: Does not distract from the aquarium display

• Maintenance-free operation: No power source or calibration required

 

Technical Specifications

• Type: External analogue aquarium thermometer

• Display: Colour-changing temperature strip

• Temperature scale: Celsius and Fahrenheit

• Installation: External glass attachment

• Power source: None (battery-free)

• Suitability: Freshwater and marine aquariums

 

Who is this product for?

Ideal for aquarium keepers who want a simple, reliable way to monitor water temperature without adding equipment inside the tank. Perfect for beginners, nano tanks, and anyone who prefers a clean, clutter-free aquarium setup.