Aquarium Thermometers

Aquarium thermometers are inexpensive and absolutely necessary for any aquarium owner. As you surely know, maintaining constant tank temperature is vital to the health of your tropical fish. In spite of house thermostats, temperatures indoors fluctuate constantly and you need to be alerted right away if something goes wrong with the temperature inside the tank.

This simple device can save you not only tons of money, but also save your fish!

There are many brands and many different types of aquarium thermometers. But don't spend too much time deciding between them. Those differences are not as important as that you place them in such a way that you can see them easily and read them regularly.

This aquarium thermometer comes with a 3 ft. long probe cord which lets you place the unit almost anywhere, while an all–plastic probe and suction cup makes placement and cleaning easy. Operates on two watch batteries (included). Size: Unit is 1 3/4 in. x 2 1/2 in. x 1/2 in. thick.

More Aquarium Thermometers:

PETCO Outside Thermometer for Fresh & Marine Aquariums (4.25"Height; Vertical) PETCO Outside Thermometer for Fresh & Marine Aquariums Accurate and easy to read temperature measurement for fresh or saltwater aquariums. Vertical strip thermometer adheres to outside of aquarium glass.

in Stock at PETCO Animal Supplies SKU: 1191250

1.99

Liquid Crystal Thermometer This is a wide range horizontal thermometer. Ranges from 68 to 107 degrees F.

in Stock at That Fish Place/That Pet Place SKU: 214842

1.79

Floating Thermometer - Economy Small Floating Thermometer floats in your aquarium or suctions to the side of your aquarium. Floating Water thermometer effectively reads from 20 to 100 degrees Fahrenheit.

in Stock at That Fish Place/That Pet Place SKU: 212355

2.39

ATI Aquarium Thermometer (2.75"Height; Vertical) Know your aquarium's temperature at a glance. Easy-to-read and accurate thermometer mounts on outside of your aquarium.

in Stock at PETCO Animal Supplies SKU: 34444

3.29

PETCO Glass Thermometer (4.5"Length; Glass) Accurate and easy to read temperature measurement in celsius and fahrenheit for fresh or saltwater aquariums.Weighted glass thermometer sinks to bottom and sits upright.

in Stock at PETCO Animal Supplies SKU: 737135

2.99

PETCO Aquarium Hydrometer with Thermometer (8"Height) Measure the salinity of your marine or reef tank quickly and accurately while also monitoring water temperature with our dual-purpose glass Hydrometer/Thermometer.Features easy-to-read markings along with safe zone indicators.

in Stock at PETCO Animal Supplies SKU: 732923

3.99

ATI Aquarium Thermometer (4"Length; Horizontal) Know your aquarium's temperature at a glance.Easy to read, accurate thermometer mounts on outside of your aquarium.

in Stock at PETCO Animal Supplies SKU: 34517

3.79

Laguna Floating Pond Thermometer - Centigrade & Fahrenheit This thermometer has a reading for Celsius and for Fahrenheit and an easy-view window with large scale for quick temperature readings. It comes with a 3' string for ease in pulling the thermometer out of the water to read.

in Stock at That Fish Place/That Pet Place SKU: 214618

3.79

Thermometer This thermometer is for monitoring terrarium temperature levels. Easy to read design, simple installation.

in Stock at That Fish Place/That Pet Place SKU: 214877

4.29

Analog Reptile Thermometer For precise temperature monitoring in your terrarium or small animal cage. Made with precision German movement.

in Stock at That Fish Place/That Pet Place SKU: 204520

5.69

Digital Aquarium Thermometer Digital Aquarium Thermometer is fully submersible. Digital readout faces forward in the tank.

in Stock at EntirelyPets SKU: zmdigaquatherm

6.99

NEW! Coralife Digital Thermometer Coralife Digital Thermometer is economically priced and digitally accurate, the Coralife Digital Thermometer's sophisticated look is completely transportable. This allows you to bring it with you as you graduate to larger, more involved aquarium systems.

in Stock at EntirelyPets SKU: coralifetherm

6.99

Battery Operated Digital Thermometer This unit is ideal for aquariums and terrariums. Features include: readings in 0.

in Stock at That Fish Place/That Pet Place SKU: 209362

7.29

Pond Tube Thermometer ABS molded tube case thermometer has a sealed in blown glass tube with F or C scales and a polyethylene rope. Size: 6.

out of stock That Fish Place/That Pet Place SKU: 198968

7.99

Precision Analog Thermometer & Humidity Gauge The Precision Analog Thermometer and Humidity Gauge allows for precise monitoring of both the temperature and humidity of your terrarium from one unit. Unique velcro backing enables removal of the gauge for thorough terrarium cleaning.

in Stock at That Fish Place/That Pet Place SKU: 204517

12.99

Hagen Pond P Pond Thermometer Card - PT945 temperature range from 30 to 120 degrees f.easy-view window with large scale for quick temperature readings.

in Stock at UnbeatableSale, Inc. SKU: BCI13800

15.78

Tetra Pond Pond Feeding Thermometer - 16573 use in your pond to help determine the best food to feed your fish.plastic.

in Stock at UnbeatableSale, Inc. SKU: BCI14094

16.27

Pentair Aquatics Rainbow Lifegard Little Time or Temp Digital Clock/Thermometer (4.5"Length) Measure and display the water temperature in your fresh or saltwater aquarium or your room temperature with Little Time or Temp.Three foot cord with all plastic probe and suction cup.

in Stock at PETCO Animal Supplies SKU: 532843

34.99

Little Time or Temperature Thermometer A digital clock/thermometer with illuminating back light can be used in aquariums, reptile habitats, and green houses. Gives accurate measurements of aquarium water or room temperature in Fahrenheit or Celsius.

out of stock That Fish Place/That Pet Place SKU: 198909

19.99

Chaney Instrument Brass Thermometer 3.5 Inch - 00334 thermometer has a brass swinging arm.approximately 3.

in Stock at UnbeatableSale, Inc. SKU: BCI16505

23.95

Hubbard Scientific 3266 Heat Transfer Kit Low Temp Thermometer Package of 15 used to observe and measure heat transfer students fill one container with water at room temperature and the other with boiling water. a thermometer is placed in each container.

in Stock at UnbeatableSale, Inc. SKU: AMED686

30.38

Digital Temperature Alert Thermometer Displays both aquarium water temperature and room temperature in F. Product has four alert features that use both sound and LED Flashes: high temperature alert only (probe), low temperature alert only(probe), both high and low temp alert (Air/Room), both high and low temp alert (probe).

out of stock That Fish Place/That Pet Place SKU: 198988

31.29

Pinpoint Wireless Thermometer Utilizing a radio wave signal, the remote sensor will measure the temperature at the waterproof probe tip and send the information to the display monitor, which will display the temperature in Fahrenheit or Celsius degrees. The thermometer can accept a maximum of 4 remote sensors thus expanding the monitoring capability to 4 different locations to be displayed on the same monitor.

in Stock at That Fish Place/That Pet Place SKU: 207907

37.99