Jumbo glass floating thermometerThe Marina floating thermometer with suction cup is accurate and easy to read. It has a safety zone indicator for most tropical fish. Protect your fish from unsafe temperatures by monitoring aquarium temperature with this reliable thermometer. Simply suction the thermometer in the aquarium and you are ready to go.30-100F·For fresh and salt water · Accurate and easy to read · Safety zone indicator for most tropical fish · Protects fish from unsafe temperatures
