Checks and provides a digital reading of your aquarium water's temperature. This digital thermometer includes two suction cups one for the exterior device and one to hold the small black probe in the aquarium. Maintaining temperatures within range is important for jellyfish to thrive, but even more important is to avoid temperature fluctuations throughout the day. Our jellies require water temperature between 60 and 76 degrees Fahrenheit, so this thermometer will be useful to monitor that. Jellies do prefer cooler temperatures but if your temperature falls below this range, you can add a heater to your aquarium. Aim for an ideal temperature of 66-74! (To conserve battery life, press and hold the power button for 4 second to power off the device after reading temperature.) [Batteries included. Probe can be set to read in either Fahrenheit or Celsius]
