7 Best Aquarium Digital Thermometers

#1 – Zacro LCD Digital Thermometer

• Temperature Range : -50 to +70F
• Display : Large LCD
• Water Type : Salt and Freshwater
• Thermometer size : 2.17 x 1.46 inches
• Probe Cable Length : 24.88 inches
• Suction Cup : Yes
• Overall Rating : 9 / 10
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• Read My Review

#2 – Jcreate Aquarium Thermometer

• Temperature Range : -50 to +70F
• Display : Extra Large LCD
• Water Type : Salt and Freshwater
• Product Size : 76*76*7mm / 3.0*3.0*0.28 inch
• Probe  : No Probe Needed
• Colour : Black or Red
• Rating : 9 / 10
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#3 – Keynice Digital Thermometer

• Temperature Range : -58 to +230F
• Display : Colour LCD
• Water Type : Salt and Freshwater
• Product Size : 4.2 x 1.6 x 1.6 inches
• Power : Via USB Connection
• Rating : 8.8 / 10
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#4 – Fluval Celcius Digital Aquarium Thermometer

• Temperature Range : -58 to +230F
• Display : 1.6 inch LCD Display
• Water Type : Salt and Freshwater
• Product Size : 48*28*15mm
• Probe Cable Length : 1 Meter
• Rating : 8.7 / 10
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#5 – Zoo Med Digital Thermometer

• Temperature Range : -50 to +70F
• Display : Large LCD
• Water Type : Salt and Freshwater
• Thermometer size : 2.17 x 1.46 inches
• Probe Cable Length : 24.88 inches
• Suction Cup : Yes
• Rating : 8.8 / 10
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#6 – Lifegard Aquatics Digital Temp Alert

• Temperature Range : -50 to +70F
• Display : Extra Large LCD
• Water Type : Salt and Freshwater
• Product size : 6 x 1.2 x 8.2 inches
• Power : AAA Battery
• Suction Cup : No, Stand Included
• Rating : 9 / 10
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#7 – Capetsma Aquarium Thermometer

• Temperature Range : -50 to +70F
• Display : Large LCD
• Water Type : Salt and Freshwater
• Thermometer size : 2.17 x 1.46 inches
• Probe Cable Length : 24.88 inches
• Suction Cup : Yes
• Rating : 8.8 / 10
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   Zacro LCD Digital Thermometer Review

Rated #1 Digital Thermometer By HelpUsFish

This is a great little thermometer which has a nice big easy to read display and comes with two suction cups which help to hold the thermometer in place.

I have been using this product in my 60 gallon tank and I can say it reads the water temperature very accurately. I have been using this for five months and have had no issues with it, I highly recommend this product.

  Jcreate Aquarium Thermometer Review

Rated #2 Digital Thermometer
Rated #1 Probe-Less Digital Thermometer

This thermometer really surprised me. You stick it on the outside of your tank. It has a backside temperature sensor. I thought this will not measure the water temperature accuracy!  Oh how I was wrong, it is very accurate at measuring the temperature.

I love the large LED display making it easy for you to read the temperature.

Operation:

1. We already inserted battery in the red battery cover below the LCD Screen ,the LCD will now display the current temperature.
2. Tear off the paper, stick this device on to a transparent tinted background.
3. If you want to switch ℃ / °F, click ”up“or “down“ key on the screen.
4. There is a flash function, The big number will flash if the water temperature is higher than the highest temperature or lower than the lowest temperature you set.

  Keynice Digital Thermometer Review

Rated #3 Digital Thermometer

This is a great little thermometer which has a nice big easy to read display.

Again in my tests this measured the temperature of my aquarium water very accurately.

Can display the temperature in C or F, you have to remove a jumper at the back of the device to swap.

The only thing I do not like about this unit is that you need to connect the USB cable to a PC or power socket.

  Fluval Celcius Digital Aquarium Thermometer Review

Rated #4 Digital Thermometer
Rated #1 Budget Digital Thermometer

This is by far the cheapest product on my list, currently it is selling for $4.99 on Amazon.

It might not have as many features as other thermometers such as only displays the temperature in fahrenheit, Doesn’t have an alarm, Basic looking display.

Having said that it does exactly what you want and it does it well.  The tests that I did it measured my aquarium water very accurately, Was very easy to setup and use and has currently lasted 5 months with no issues.

I highly recommend this product if you are looking not to spend a lot of money.

  Zoo Med Digital Thermometer Review

Rated #5 Digital Thermometer
Rated #2 Budget Digital Thermometer

This is the second cheapest product on my list, currently it is selling for $5.49 on Amazon.

This is a great thermometer which has a nice big easy to read display and comes with two suction cups which help to hold the thermometer and probe in place.

In my tests it reads the water temperature very accurately. I have been using this for five months and have had no issues with it, I highly recommend this product.

  Lifegard Aquatics Digital Temp Alert Review

Rated #6 Digital Thermometer
Rated #1 Expensive Digital Thermometer

I for me this is the best product I have reviewed. The only reason why I did not rate this as #1 is because of its price. Currently it is selling for $42.52 on Amazon.

This product has a lot more features than the others which include an alarm if the water temperature goes below or above what you set.

It also displays two temperatures, the room temperature and the water temperature. It also uses a AAA battery which I like as this is a higher capacity battery compared to the other products.

This product also comes with a stand or sticky back which enables you to easily place it on your aquarium tank.

  Capetsma Aquarium Thermometer Review

Rated #7 Digital Thermometer
Rated #1 Digital Thermometer With Alarm

This product has no wires / probe, you attach it directly on to the outside of the glass in your aquarium.

It also has an alarm if the water temperature goes below or above what you set.

In my tests the water temperature reading were out by 1 fahrenheit,  I don’t believe this to be a big issue.

It also does not come with any batteries, You will need