Check the temperature of your aquarium with this Underwater Treasures Floating Glass Thermometer. This unique floating thermometer can be placed anywhere inside your aquarium to accurately identify and monitor the temperature of your tank. This glass thermometer contains no mercury.
- Unique glass design which keeps algae from growing and develop quickly
- Easy-to-read temperature measurements
- Strong suction cup that holds the thermometer in place
- Read temperature in Celsius and/or Fahrenheit