Editor's Choice - Our Favorite American Thermal Aquarium Thermometers

1. American Thermal Horizontal Aquarium Thermometer

User Ratings: 59 4

American Thermal BC002008 First Impressions

"I immediately ordered it."

So far, they're all doing their job in my four tanks and I am quite content. Was going to get a floater until I saw this magnetic one! It works equally well on all of them. My poor fish was in 86 degrees water for a month. Very accurate, have checked it with other thermometers as well. 6 in a pack, extra batteries, easy set up, great price. The digital display is nice and small as well.

  • American Thermal Horizontal Aquarium Thermometer
  • Accurate.
  • Easy-to-read.
  • Mounts on the outside of your aquarium.
  • New movable thermometer.
  • Horizontal.
  • Manufacture: American Thermal
  • Product Dimensions: 7.4 x 1 x 0.1 inches; 0.35 Ounces
  • Editor's Impressions Of The American Thermal BC002008
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='4.1']
  • Value For Money [star rating='4']
  • Affordability [star rating='4.8']

American Thermal BC002008 Final Thoughts

"Great price."

The extra batteries where very much appreciated and came in handy. The lid is textured aluminum, and the suction cups don't stick to that. They reviewed the packaging or shipping by saying it arrived broken. Good cheap accurate aquarium thermometer. The temperature fluctuated a lot with it. The digital display itself is easy to read at a glance. Far more accurate than the usual small glass ones or external LCD strips.

Overall Score
4.2

[star rating="4.2"]
(351 Points)

Peoples Choice - Other Highly Rated American Thermal Aquarium Thermometers

2. ATI Aquarium Thermometer (Pack of 3)

American Thermal First Impressions

"Sticks easy."

I have always had trouble reading the color temp. The display can be set to Fahrenheit or Celsius. It works equally well on all of them. It is about 6 inches in length and roughly an inch wide. 82 PER THERMOMETER with battery included. My poor fish was in 86 degrees water for a month. They reviewed the packaging or shipping by saying it arrived broken.

  • ATI Aquarium Thermometer (Pack of 3)
  • Accurate
  • Easy to read.
  • Mounts on the outside of your aquarium.
  • Vertical
  • Pack of 3
  • Manufacture: American Thermal
  • Item Weight: 0.32 ounces
  • Product Dimensions: 7.8 x 4.2 x 1.3 inches
  • Editor's Impressions Of The American Thermal
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='4.1']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='4.4']

American Thermal Final Thoughts

"Great price too."

The plastic from the suction cup quickly turned from a clear to a milky white. This temperature read a perfect 32 degrees. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Put them all in the same tank and they read very close to each other. So this is the extreme end of the high temperature range. I used these on a number of my aquariums that have discus fish in them. Water tested with Autidefy brand for two hours.

Overall Score
5.0

[star rating="5"]
(1 Points)

3. Marina Stainless Steel Thermometer

User Ratings: 51 11

Marina 11203A1 First Impressions

"6 tenths of a degree."

82 PER THERMOMETER with battery included. I have kept aquariums for about 45 years. And for the price you cant beat it. You can not swivle the thermometer to face a certain way. Have checked them against the glass thermometers and the accuracy is right on. I needed a solution that was not breakable and these do the trick! Was going to get a floater until I saw this magnetic one!

  • Marina Stainless Steel Thermometer
  • Easy-to-read stainless steel thermometer
  • Includes a safety zone indicator. Safety zone Indicator for Most Tropical fish
  • Ensures your aquarium is at a proper temperature. Protects your Fish from Unsafe Temperature
  • Hooks onto the side of your aquarium
  • 4.5 inches tall
  • Manufacture: Marina
  • Product Dimensions: 0.9 x 3.9 x 7 inches; 0.64 Ounces
  • Editor's Impressions Of The Marina 11203A1
  • Thermometer Accuracy [star rating='3.8']
  • Quality [star rating='4.2']
  • Value For Money [star rating='4.4']
  • Affordability [star rating='3.5']

Marina 11203A1 Final Thoughts

"Currently maintains a 76."

All were Close enough for a fish tank and other uses. The lid is textured aluminum, and the suction cups don't stick to that. The suction cups work well anywhere I have placed it it has not Fallen. It works equally well on all of them. Still a recommendation for me due to price and accuracy. So the extra units will always come in handy. My only complaint is that they tend to be a one time use.

Overall Score
4.0

[star rating="4"]
(251 Points)

4. Aquarium Equip LCD Digital Thermometer Temperature Meter

User Ratings: 50 50

Aquarium Equip A930 First Impressions

"I like this."

This doesn't bother me as it ws so cheap. The non-working ones still provide 2 batteries each AND. So much easier than the ones that hang on the inside. 82 PER THERMOMETER with battery included. The suction works for a month at a time- in pool and hot tub circulation. Personally I do not mind the way it looks in my aquarium. Love it, it's easy to read and keeps an accurate temp.

  • Aquarium Equip LCD Digital Thermometer Temperature Meter
  • Measuring Range: 0°C~50°C
  • Accuracy: ±1°C
  • Ambient temperature: -10°C~50°C
  • Battery: LR44x1
  • Measures approximately: 4.1cm(1.6''L)x2.7cm(1''W)x1.2cm(0.47''H)
  • Manufacture: Dr. Moss
  • Product Dimensions: 6.42 x 4.21 x 1.1 inches; 1.6 Ounces
  • Editor's Impressions Of The Aquarium Equip A930
  • Thermometer Accuracy [star rating='2']
  • Quality [star rating='4']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='2.8']

Aquarium Equip A930 Final Thoughts

"Great product!"

It started working as soon as I put it in and has been working ever since. The suction will never be the same. Since it is a mercury thermometer, it is very accurate. So far, they're all doing their job in my four tanks and I am quite content. I got the second one as a bonus that I'm now using in my old tank. This little wonder allows me to see at a glance that everything is as it should be. I don't think they are backlit but for the price they are still nice.

Overall Score
3.0

[star rating="3"]
(2 Points)

5. Zoo Med Laboratories SZMHC10 Hermit Crab Thermometer

User Ratings: 84 8

Zoo Med 976001 First Impressions

"And he is a betta."

Then is started to give a low reading, and it is not reading the correct temperature. I removed the batteries of the units I wasn't using right away. I used these to raise chicks, and in my parrot cages. I used these on a number of my aquariums that have discus fish in them. 49 thermometer that is 100% accurate. One extra battery came with each unit. You dont HAVE to stick the display onto your tank.

  • Zoo Med Laboratories SZMHC10 Hermit Crab Thermometer
  • Zoo Med Laboratories Hermit Crab Thermometer
  • High range LCD thermometer for monitoring the temperature in your crabs terrarium
  • Allows precise monitoring of both temperature and humidity in your hermit crabs home
  • Manufacture: TopDawg Pet Supply
  • Product Dimensions: 0.02 x 0.02 x 0.02 inches; 0.32 Ounces
  • Editor's Impressions Of The Zoo Med 976001
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='4.4']
  • Value For Money [star rating='3.8']
  • Affordability [star rating='3.6']

Zoo Med 976001 Final Thoughts

"It's accurate I tell you."

I use a small flashlight if I don't want to brighten the area. I use a small flashlight if I don't want to brighten the area. 6F all six took about three minutes to read between 88. And is easily hidden behind a plant. Ordered three of these and they do the job. I just wrote it off as a minor loss. The suction will never be the same.

Overall Score
4.5

[star rating="4.5"]
(21 Points)

6. Vipe Digital LCD Aquarium Thermometer Fish Tank Water Terrarium Temperature

User Ratings: 52 15

Vipe First Impressions

"Super easy."

The digital display is nice and small as well. I got the second one as a bonus that I'm now using in my old tank. I am extremely pleased with this product. I don't think i'll ever be able to trust a digital thermometer again. Good cheap accurate aquarium thermometer. This doesn't bother me as it ws so cheap. I'm pretty sure those reviewers have acrylic tanks.

  • Vipe Digital LCD Aquarium Thermometer Fish Tank Water Terrarium Temperature
  • Large accurate temperature readings with this Mini Digital Thermometer that has a simple appearance, discreet design and an easy to read LCD display.
  • Made of sturdy plastic material, ideal for use in refrigerators, refrigerators and freezers, the thermometer has a range of -50 degrees to +70 degrees.
  • Size of the Freezer Digital Thermometer Refrigerator makes it ideal for any situation where you need an accurate reading and easy-to-read screen displays the ambient temperature in Celsius.
  • Thermometer Refrigerator Digital Thermometer features ultra small and lightweight unit.
  • Powered by two button batteries, LCD Digital Thermometer can be used for a long time.
  • Manufacture: Vipe
  • Editor's Impressions Of The Vipe
  • Thermometer Accuracy [star rating='2.8']
  • Quality [star rating='3.7']
  • Value For Money [star rating='3.2']
  • Affordability [star rating='4.8']

Vipe Final Thoughts

"It is within."

This is my first 5 star review out of many many reviews on Amazon. Then she followed up again on that, asking if they had arrived and were okay. I got root rot after light leaks and high water temps. The only reason I didn't give this 5 stars is because my betta fish didn't like it. He was moving slow in the winter and we realized he needed a heater! All are pretty accurate within one degree as claimed. I did have a problem with one in my first pack of 6.

Overall Score
3.8

[star rating="3.8"]
(26 Points)

7. Digital Aquatic Turtle Thermometer

User Ratings: 21 10

Zoo Med TH-26 First Impressions

"Subtracted from the tank."

One of my aquariums is glass, and the other two are plastic. Checked with temp gun and the terrarium was on target at 88. This thermometer is spot on accurate. So much so that I purchased a second set of 6. 6F all six took about three minutes to read between 88. This company is taking the long term view of how to do business right. 2 deg, if it was 32, it would be a SOLID block of ice.

  • Digital Aquatic Turtle Thermometer
  • DIGITAL AQUATIC TURTLE THERMOMETER
  • 2 PACK
  • AQUARIUM
  • THERMOMETER & HYDROMETER
  • ZOO MED LABORATORIES
  • ZOO MED LABORATORIES
  • DIGITAL AQUATIC TURTLE THERMOMETER
  • AQUARIUM
  • Manufacture: ZOO MED LABORATORIES
  • Item Weight: 2.39 ounces
  • Batteries: 2 Nonstandard Battery batteries required.
  • Editor's Impressions Of The Zoo Med TH-26
  • Thermometer Accuracy [star rating='2.2']
  • Quality [star rating='2.6']
  • Value For Money [star rating='2.9']
  • Affordability [star rating='3.2']

Zoo Med TH-26 Final Thoughts

"Working wonderfully!"

I'm pretty sure those reviewers have acrylic tanks. It will make you wonder why nobody thought of it before. Very impressed, I have now had them in used for a month so far. I can't say which is the most accurate and don't really care. I came here to give this product a positive review. This is how you calibrate a thermometer. My 50+ eyes cannot read a regular tank thermometer without squinting.

Overall Score
3.2

[star rating="3.2"]
(6 Points)

8. Exo Terra Exo Terra Liquid Crystal Thermometer

User Ratings: 56 11

Exo Terra PT2455 First Impressions

"No complaints."

I guess these units do not like saltwater. Only thing I don't love is how long the cord is. Since it is a mercury thermometer, it is very accurate. The non-working ones still provide 2 batteries each AND. Put them all in the same tank and they read very close to each other. We are using them to measure various temperatures inside and outside of a motorhome. In the right situation this magnet thermometer is the best available.

  • Exo Terra Exo Terra Liquid Crystal Thermometer
  • Liquid Crystal Thermometer
  • Can be placed inside or outside the terrarium
  • Wide range horizontal thermometer
  • Easy to read and install
  • Great for monitoring the temperature levels
  • Manufacture: Exo Terra
  • Product Dimensions: 0.2 x 3.3 x 7.2 inches; 0.32 Ounces
  • Editor's Impressions Of The Exo Terra PT2455
  • Thermometer Accuracy [star rating='4.4']
  • Quality [star rating='4.2']
  • Value For Money [star rating='3.1']
  • Affordability [star rating='3.3']

Exo Terra PT2455 Final Thoughts

"Fish and me happy."

However, Lucy at Zacro read this review and emailed me. The only reason I didn't give this 5 stars is because my betta fish didn't like it. I recommend gluing the suction cups in place where needed for long-term installation. It is my opinion that everyone should have these that are in the Aquarium Hobby. I got the second one as a bonus that I'm now using in my old tank. In the right situation this magnet thermometer is the best available. When and if we run out of this batch, I'll instantly order another batch.

Overall Score
4.0

[star rating="4"]
(122 Points)

9. AUTIDEFY LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature

User Ratings: 63 7

AUTIDEFY First Impressions

"8 C lower than this."

This thermometer is spot on accurate. It is large enough to see without being obtrusive. Bought the two pack of thermometers. The suction works for a month at a time- in pool and hot tub circulation. Very impressed, I have now had them in used for a month so far. 82 PER THERMOMETER with battery included. And for the price you cant beat it.

  • AUTIDEFY LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature
  • Submerge probe into fish tank to measure water temperature (Submerge probe only, do not submerge thermometer in water)
  • Digital °C /° F thermometer;Temperature range -50°c ~ + 70°c,Operating temperature -10°c ~ +50°c
  • Easy to apply suction cup and easy to read LCD screen; Temperature readings to within 0.1 degree
  • Powered by one LR44 button cell (included)
  • Package Contents: 3 x Battery; 3 x Digital Thermometer;3 x Probe
  • Manufacture: AUTIDEFY
  • Editor's Impressions Of The AUTIDEFY
  • Thermometer Accuracy [star rating='4.9']
  • Quality [star rating='4.2']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='3.3']

AUTIDEFY Final Thoughts

"I must say."

Water tested with Autidefy brand for two hours. For something so cheap, they are working remarkably well. This is my first 5 star review out of many many reviews on Amazon. I was using one of those ubiquitous cheap digital thermometers on Amazon. SIX Digital Thermometers with SIX batteries INCLUDED working so well. I had my heater set at 73-degrees and the thermometers showed 74. Personally I do not mind the way it looks in my aquarium.

Overall Score
4.2

[star rating="4.2"]
(386 Points)

10. Stick-on Thermometer for Tortoise and Reptiles, Creates Ideal Habitat, Keeps Turtle, Gecko, Dragon, ...

User Ratings: 67 19

SunGrow First Impressions

"No issues."

The digital display itself is easy to read at a glance. I got root rot after light leaks and high water temps. So far, they're all doing their job in my four tanks and I am quite content. So much easier than the ones that hang on the inside. It is my opinion that everyone should have these that are in the Aquarium Hobby. I bent it a little bit and when I put it back it was perfectly fine. It will make you wonder why nobody thought of it before.

  • Stick-on Thermometer for Tortoise and Reptiles, Creates Ideal Habitat, Keeps Turtle, Gecko, Dragon, and Snake Healthy, Peel-and-Go, Accurate Monitoring of Vivarium
  • ✔ MAINTAINS IDEAL ENVIRONMENT FOR TORTOISE AND REPTILES --- Cold-blooded species such as snakes, turtles and tortoises cannot change their body temperature independently with their environmental temperature. By using a Stick-on Thermometer by SunGrow, you will be able to monitor and maintain correct temperatures that directly affect the overall health of a domestic turtle or tortoise.
  • ✔ REGULATES BODY TEMPERATURE OF COLD-BLOODED SPECIES --- Since body temperature determines the rise and fall of activity levels of these cold-blooded animals, they need to be able to regulate theirs along with their environment. Failure to do this may lead to health problems.
  • ✔ KEEPS YOUR COLD-BLOODED PET HEALTHY --- On-stick Thermometer helps in determining if your reptiles and amphibians live in ideal temperature conditions. Living in an unsuitable environmental temperature can cause lack of appetite and may be the cause behind ill-health of your prized pets.
  • ✔ FOR LONG LIFESPAN --- A healthy turtle may contract maladies if ideal living conditions aren’t provided and not properly monitored. We should never rely on what feels warm to humans as these may not be what your pets need. You’ll notice changes in turtles or tortoises' health, if they are kept between 65 and 72 degrees Fahrenheit for a prolonged period of time.
  • ✔ EASY TO INSTALL, USE AND READ --- Simply peel and stick and experience no worry tortoise and reptiles handling! Stick-on Thermometer by SunGrow has a simple design which complements your easy to care lifestyle for your pets. It is black in color with big, easy to read fonts on white color. Measuring 5.2” tall by 0.7” wide (13cm x 1.8cm), it also has a blue and green indicator that tells you the temperature it reads.
  • Manufacture: Luffy Pets Collection
  • Editor's Impressions Of The SunGrow
  • Thermometer Accuracy [star rating='4.4']
  • Quality [star rating='3.1']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='4']

SunGrow Final Thoughts

"I AM SO HAPPY."

We are using them to measure various temperatures inside and outside of a motorhome. It worked great and I highly recommend it! I have this thermometer on all my tanks. It is easy to use and install it'disappears' in your tank it is so unobtrusive. I had my heater set at 73-degrees and the thermometers showed 74. I guess these units do not like saltwater. I find that the temps are accurate, and this product gives added peace of mind.

Overall Score
4.1

[star rating="4.1"]
(17 Points)

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