Editor's Choice - Our Favorite Electronic Aquarium Thermometers

1. Aquarium Thermometer, Digital Fish Tank Thermometer with Large LCD Display Touch Screen, Stick-on Ta...

User Ratings: 75 4

capetsma First Impressions

"They are within 0."

I have always had trouble reading the color temp. These digital thermometers are great and there is no guesswork involved. Sure enough the digital thermometer was way off by 6 degrees! Good cheap accurate aquarium thermometer. Was going to get a floater until I saw this magnetic one! It will make you wonder why nobody thought of it before. You can not swivle the thermometer to face a certain way.

  • Aquarium Thermometer, Digital Fish Tank Thermometer with Large LCD Display Touch Screen, Stick-on Tank Temperature Sensor Ensures Accurate Reading for Aquarium Terrarium Amphibians & Reptiles
  • Cordless & Touch Screen Design : no probes or messy wires in water and backside temperature sensor stick on the outside glass of the fish tank prevent water infiltration and electronic Oxidation, Large Crystal Touch Screen makes it easier to read the temperature far away, stands out among other aquarium thermometers.
  • Large numbers on 3.2" Large Transparent Screen : 3.2" large glass screen is larger than most of the thermometers, large temperature display on transparent screen, will not block your view.
  • Accurate Display : With an accurate temperature sensor stick on the surface of the fish tank, this Digital aquarium thermometer will display temperature for fish tank, reading from 0°C to 70°C / 32°F - 158°F, accurate to 0.1°
  • Easy to Operate : pull down the black battery cover below the screen, insert the battery, close it, stick and read the tank temperature. Press "up" or "down" to switch °C / °F
  • Widely used : Suitable For Different Water Types Such As Fresh Water, Tap Water, Salty Water, Marine Water And Monitors The Living Temperature For Reptile Such As Lizard, Turtle.Also, it can be used for DIY Brew Beer and wine barrel, Terrarium, Greenhouse, Vivarium and any sort of pet tank thermometer.
  • Manufacture: capetsma
  • Product Dimensions: 2.99 x 0.28 x 2.99 inches; 3.21 Ounces
  • Batteries: 2 CR2 batteries required. (included)
  • Editor's Impressions Of The capetsma
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

capetsma Final Thoughts

"These are great!"

So, in those cases, I find it easier to simply replace it. I was using one of those ubiquitous cheap digital thermometers on Amazon. Ambient room temperature measures 72. I guess these units do not like saltwater. The extra batteries where very much appreciated and came in handy. I have it in both my aquariums now. I was using one of those ubiquitous cheap digital thermometers on Amazon.

Overall Score
4.5


(1678 Points)

Peoples Choice - Other Highly Rated Electronic Aquarium Thermometers

2. Qguai Aquarium Thermometer, C/F Switch LCD Digital Fish Tank Thermometer with Large Clear Screen, Mo...

User Ratings: 70 6

Qguai First Impressions

"Very easy to read."

I have always had trouble reading the color temp. It is about 6 inches in length and roughly an inch wide. It is easy to use and install it'disappears' in your tank it is so unobtrusive. The display can be set to Fahrenheit or Celsius. So much easier than the ones that hang on the inside. So the extra units will always come in handy. The temperature fluctuated a lot with it.

  • Qguai Aquarium Thermometer, C/F Switch LCD Digital Fish Tank Thermometer with Large Clear Screen, Monitor Water Terrarium Temperature, No Messy Wires in Your Saltwater Freshwater and Reef Aquarium.
  • Simple and Sleek Aquarium Thermometer: Digital number display on large clear screen ensures you to read current temperature quickly and accurately without any blind zone. no probe or messy wires in water reduce electronic component aging problem.
  • Accurately monitor water temperature in Fahrenheit or Celsius: Just press “up” or “down” to switch C / F, and this temperature thermometer will display reading from 0C to 70C / 32F - 158F with precision backside temperature probe stick on the fish tank, it is accurate to 0.1.
  • Easy to set up safe zone: This Self-adhensive fish tank thermometer is powered by CR2032 (included), you just need to tear down the film and stick it to the outside of your fish tank. Specially made insulative tape is easy to remove and will not leave any stain on your fish tank.
  • Wide application: Suitable for different water types such as fresh water, tap water, salt water, marine water, can be used as terrarium thermometer to monitor the living temperature for reptile such as lizard, turtle.
  • Our Fish Aquarium Thermometer is backed by 6 Month Warranty. Contact us if you have any problem.
  • Manufacture: Qguai
  • Batteries: 2 Product Specific batteries required. (included)
  • Editor's Impressions Of The Qguai
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Qguai Final Thoughts

"Would buy again."

Ordered three of these and they do the job. This temperature read a perfect 32 degrees. Good cheap accurate aquarium thermometer. The display can be set to Fahrenheit or Celsius. I had my heater set at 73-degrees and the thermometers showed 74. However, Lucy at Zacro read this review and emailed me. All were Close enough for a fish tank and other uses.

Overall Score
4.4


(244 Points)

3. IS Icstation Digital Thermometer, Car Auto Temperature Gauge Sensor, DC 4-28V Fahrenheit Dual Displa...

User Ratings: 62 11

IS 13649 First Impressions

"Very easy to read."

Only thing I don't love is how long the cord is. I got root rot after light leaks and high water temps. Since adding one of these, it has been much easier to monitor the temp of my tanks. A battery can last you up to six months, I'd say, but expect more like three. You can glue, tape or simply cover the cords in the tank to keep them discreet. Then she followed up again on that, asking if they had arrived and were okay. I think the people who said the suction cup broke.

  • IS Icstation Digital Thermometer, Car Auto Temperature Gauge Sensor, DC 4-28V Fahrenheit Dual Display, Monitor with 2 NTC Waterproof Probes for Aquarium Vehicle Fish Tank
  • NTC WATERPROOF PROBES - This aquarium thermometer uses high-precision NTC waterproof metal sensor probes to measure the water temperature of the aquarium.
  • DUAL SENSOR PROBES - Comes with 2 probes, enabling the thermometer to test the temperatures of two different places. For example, measuring the temp of indoor&outdoor or two different tanks at the same time.
  • RED&BLUE DISPLAY - Icstation temp sensor uses a HD LCD display to let you know the Fahrenheit temperature of the fish tank in real time, thus providing a healthy and comfortable water environment for your lovely fishes. The clear red and blue display makes it easy to read temperatures no matter in bright and dark.
  • WIDE TEMP RANGE - Temperature Range -58 ℉ ~ +257℉(Fahrenheit); Temperature measurement accuracy: ±1℉ (±0.1℉ when temperature within -9.9~99.9F). It can be not only used in water but also used to measure the air temperature. But the water temperature will be more accurate than that of air.
  • 3 FEET WIRES - With 1 meter long wires, it is flexible to place the 2 sensor probes in aquarium tank, fish tank, reptile terrarium, refrigerator, brooders, vehicle or any other place that requires monitoring of temperature.
  • ICStation has 9 years experience on electronic industry products
  • Welcome to ask for discount for bulk purchase
  • Provide technical assistance
  • Manufacture: icstation
  • Editor's Impressions Of The IS 13649
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

IS 13649 Final Thoughts

"This is perfect."

Then she followed up again on that, asking if they had arrived and were okay. We are using them to measure various temperatures inside and outside of a motorhome. So versatile, I can read the temperatures literally anywhere. The plastic from the suction cup quickly turned from a clear to a milky white. Still a recommendation for me due to price and accuracy. Since it is a mercury thermometer, it is very accurate. So, in those cases, I find it easier to simply replace it.

Overall Score
4.1


(105 Points)

4. GuDoQi 4 Pack Mini Digital Electronic Thermometer Hygrometer LCD Mini Temperature Monitor Humidity M...

User Ratings: 54 12

GuDoQi First Impressions

"And he is a betta."

You can not swivle the thermometer to face a certain way. They reviewed the packaging or shipping by saying it arrived broken. One extra battery came with each unit. So versatile, I can read the temperatures literally anywhere. I have always had trouble reading the color temp. They reviewed the packaging or shipping by saying it arrived broken. 6 inch long Bala Sharks that are known to be very unruly and boisterous.

  • GuDoQi 4 Pack Mini Digital Electronic Thermometer Hygrometer LCD Mini Temperature Monitor Humidity Meter Gauge Digital Display for Reptile Incubator Fridge,Garden,Cellar Outdoor Indoor
  • Large LCD screen (3.57 x 1.68cm / 1.41 x 0.67inch) with big digits for easy reading in the distance
  • Compact size (1.9 x 1.1 x 0.6inch) and lightweight (17.9g/0.04lb), easy to carry in your pocket or car
  • Temperature range: -50°C ~ 70°C, humidity range: 10% ~ 99%, temperature accuracy: ±1°C (under normal temperature)
  • Professional thermo-hygrometer to measure temperature and humidity accurately (ONLY display temperature in Celsius)
  • Perfect to use in bedroom, living room, office, library, aquarium, incubator, brooders, reptile tank, greenhouse etc
  • Manufacture: QBY
  • Batteries: 2 LR44 batteries required. (included)
  • Editor's Impressions Of The GuDoQi
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

GuDoQi Final Thoughts

"Changed to 5-stars now."

I've checked it against two other thermometers that are accurate. Simple fix, you adjust the thermometer within the suction cup and VIOLA! Ordered three of these and they do the job. We are using them to measure various temperatures inside and outside of a motorhome. The plastic from the suction cup quickly turned from a clear to a milky white. It is always where yo last put it and it is very easy to see and read. I bought these for my dwc reservoirs.

Overall Score
4.0


(80 Points)

Honorable Mentions - More Top Selling Electronic Aquarium Thermometers

5. POPETPOP Pet Dog Thermometer Digital - LCD Waterproof Electronic Portable Vetinary Thermometer for D...

User Ratings: 29 22

POPETPOP J17LR51I0OV0P449AW15T0F First Impressions

"I like the product."

Ordered three of these and they do the job. Set all six probes up in a terrarium with a constant temp of 88. At least in the first 3 months of use. My poor fish was in 86 degrees water for a month. If the digital display starts to get dim, it's time for a new battery. They are within a degree or two of other thermometers I've checked to compare them. Since it is a mercury thermometer, it is very accurate.

  • POPETPOP Pet Dog Thermometer Digital - LCD Waterproof Electronic Portable Vetinary Thermometer for Dog Puppy Cats Rabbits Kittens Sheep Celsius Only
  • Animal Thermometer Waterproof rubber probe, flexible, soft tactility more comfortabe.
  • Soft sensor, measurement accuracy, LCD display and waterproof.
  • Suitable for your farm animal, pigs, cattle, sheep, etc.
  • Directions for use: Insert the thermometer soft head position rectal 5-8 cm, press the switch (ON/OFF) button, hear di after start measuring, when they hear continuous di... After the measurement end. 20-40 seconds out thermometer, view the measurement results, according to the switch key to clos
  • Cat temperature thermometer made of high quality ABS material, practical, durable and safe.
  • Manufacture: POPETPOP
  • Product Dimensions: 4.72 x 1.18 x 0.79 inches; 0.71 Ounces
  • Editor's Impressions Of The POPETPOP J17LR51I0OV0P449AW15T0F
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

POPETPOP J17LR51I0OV0P449AW15T0F Final Thoughts

"And he is a betta."

Simple fix, you adjust the thermometer within the suction cup and VIOLA! Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. When I set up my newest tank I will be getting another one of these. Works well in my betta tank, but provide a couple hours for it to read temp changes. So much easier than the ones that hang on the inside. I had my heater set at 73-degrees and the thermometers showed 74. The digital display itself is easy to read at a glance.

Overall Score
3.2


(32 Points)

6. Pet Thermometer, Professiona Pets Electronic Thermometer Dog Digital Thermometer Veterinary Supplies...

User Ratings: 47 22

TiTaKa 99BL49EA45Z10615TA First Impressions

"1 degree of each other."

I have always had trouble reading the color temp. Have checked them against the glass thermometers and the accuracy is right on. You can not swivle the thermometer to face a certain way. It is about 6 inches in length and roughly an inch wide. And I just really started to doubt it. I read some of the 1 star reviews and most of them are not about the product. I ordered this guy and it was 6 degrees hotter than the digital!

  • Pet Thermometer, Professiona Pets Electronic Thermometer Dog Digital Thermometer Veterinary Supplies for Pet Dogs Animals
  • Soft probe: waterproof non-toxic rubber probe, soft, soft to the touch, comfortable, safe, and will not harm the rectum of the animal.
  • Plastic material: ABS material, waterproof and environmental protection, mercury-free, safer.
  • Easy to view: LED display beeps, making the readings clearer and more accurate.
  • Simple operation: Built-in clamps make temperature measurement more convenient. You can start measurement with one click.
  • Portable design: small size, light weight, easy to carry around without taking up space.
  • Item Weight: 0.529 ounces
  • Product Dimensions: 5.71 x 0.79 x 0.47 inches
  • Editor's Impressions Of The TiTaKa 99BL49EA45Z10615TA
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

TiTaKa 99BL49EA45Z10615TA Final Thoughts

"89 plus free shipping."

I tested this in a cup crammed full of ice and some water. I ordered this guy and it was 6 degrees hotter than the digital! I find that the temps are accurate, and this product gives added peace of mind. The plastic from the suction cup quickly turned from a clear to a milky white. We are using them to measure various temperatures inside and outside of a motorhome. I recommend gluing the suction cups in place where needed for long-term installation. All are pretty accurate within one degree as claimed.

Overall Score
3.6


(18 Points)

7. Aquarium Thermometer Digital Fish Tank Thermometer with Large LCD Display Stick-on Tank Monitor Wate...

User Ratings: 36 33

JLENOVEG First Impressions

"Close enough I reckon!"

Love it, it's easy to read and keeps an accurate temp. One being a very expensive digital. It is easy to use and install it'disappears' in your tank it is so unobtrusive. I just wrote it off as a minor loss. I don't think they are backlit but for the price they are still nice. 82 PER THERMOMETER with battery included. I have bought many many temperature gauges for my various fish tanks over the years.

  • Aquarium Thermometer Digital Fish Tank Thermometer with Large LCD Display Stick-on Tank Monitor Water Terrarium Temperature with Hi Lo Alarm No Messy Wires in Your Saltwater Freshwater and Reef Aquar
  • Easy to use and install: Insert the battery, close it, then press the C/F button( which it’s in the right corner, need a paper clipper to click); then tear down the film and stick it to the outside of your fish tank.
  • Easy to read and accuracy: Easy to read digital LCD display in C/F degree. The button cell battery required for operation is included in the scope of delivery so the thermometer can be used directly out of the box. This Digital aquarium thermometer will directly display temperature for fish tank with the stick on tank sensor, reading from 0°C to 37°C / 32°F - 99°F, accurate to 0.1°
  • Cordless Design: no probes or messy wires in water and backside temperature sensor stick on the outside glass of the fish tank prevent water infiltration and electronic Oxidation.
  • Widely used: The fish tank thermometer is ideal for any aquarium. No matter if saltwater or freshwater. Used in the aquariums and reptile feeding box, ideal equipment for monitoring the temperature.
  • 12 Months Warranty: register your thermometer after purchase and increase your warranty coverage 1 YEAR. We are dedicated to ensuring your 100% satisfaction.
  • Manufacture: Poly
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The JLENOVEG
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

JLENOVEG Final Thoughts

"Only thing the battries."

So far, they're all doing their job in my four tanks and I am quite content. When I set up my newest tank I will be getting another one of these. So, in those cases, I find it easier to simply replace it. And I just really started to doubt it. I came here to give this product a positive review. I got root rot after light leaks and high water temps. These are the perfect size to be easily read while not being obtrusive.

Overall Score
3.0


(12 Points)

8. DWSFADA Waterproof Digital Thermometer for Pets,Animal Electronic Thermometer Care Tool Fast Reading...

User Ratings: 68 15

DWSFADA L052579L5U First Impressions

"Would buy again."

Was going to get a floater until I saw this magnetic one! I have it in both my aquariums now. I can't say which is the most accurate and don't really care. So far I've been very thrilled with these. This company is taking the long term view of how to do business right. I ordered this guy and it was 6 degrees hotter than the digital! Since adding one of these, it has been much easier to monitor the temp of my tanks.

  • DWSFADA Waterproof Digital Thermometer for Pets,Animal Electronic Thermometer Care Tool Fast Reading Pet Thermometer 32-43 Degree Veterinary Temperature Indicator in 3-5 Seconds
  • Material: ABS,Size:Approx. 13.5in—2cm/5.3in—0.79inch. Pet temperature readings in celsius.
  • The backlight is very useful and beautiful making everything crystal clear
  • Very suitable for pigs, cattle, cattle, goats, etc
  • Insert the thermometer into the rectum of the animal 5-8 cm and press the on/off button.Start measuring when you hear a click. The measurement ends when a continuous beep is heard
  • If you have any problems with our digital thermometer, please feel free to contact us and we will reply you within 24 hours
  • Manufacture: DWSFADA
  • Product Dimensions: 5.51 x 0.98 x 0.39 inches; 0.95 Ounces
  • Editor's Impressions Of The DWSFADA L052579L5U
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

DWSFADA L052579L5U Final Thoughts

"2-degrees."

Very impressed, I have now had them in used for a month so far. I have to admit I had two reasons for buying six. They reviewed the packaging or shipping by saying it arrived broken. Ambient room temperature measures 72. I needed a solution that was not breakable and these do the trick! And I just really started to doubt it. Then she followed up again on that, asking if they had arrived and were okay.

Overall Score
4.1


(8 Points)

9. XYZReptiles Digital Reptile Thermometer

User Ratings: 49

XYZREPTILES.COM QUALITY · SERVICE · SELECTION First Impressions

"Hope this helps!"

I had my heater set at 73-degrees and the thermometers showed 74. He acted aggressively towards it and so I ultimate ended up removing it due to that. Sure enough the digital thermometer was way off by 6 degrees! I used these on a number of my aquariums that have discus fish in them. I used these to raise chicks, and in my parrot cages. One of my aquariums is glass, and the other two are plastic. I have it in both my aquariums now.

  • XYZReptiles Digital Reptile Thermometer
  • Our digital tank thermometers are made from high quality electronics to ensure an accurate temperature reading
  • Each digital thermometer easily switches between Celsius and Fahrenheit with a pin push to suite your preference
  • Features a powerful suction cup to ensure a solid connection to your reptile terrarium so that it stays put; just wet before sticking it to the terrariums surface
  • These futuristic and functional terrarium thermometers display a large digital temperature readout and are a vital part of every reptile habitat
  • Measures 2.5 inches by 1 inch at its widest part
  • Manufacture: XYZReptiles
  • Editor's Impressions Of The XYZREPTILES.COM QUALITY · SERVICE · SELECTION
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

XYZREPTILES.COM QUALITY · SERVICE · SELECTION Final Thoughts

"Subtracted from the tank."

Very impressed, I have now had them in used for a month so far. I don't think i'll ever be able to trust a digital thermometer again. This is my first 5 star review out of many many reviews on Amazon. I find that the temps are accurate, and this product gives added peace of mind. He was moving slow in the winter and we realized he needed a heater! Bought the two pack of thermometers. It is large enough to see without being obtrusive.

Overall Score
4.2


(6 Points)

10. Smartcoco Digital LCD Screen Sensor Aquarium Thermometer Wired Aquarium Fish Tank Reptile Box Temp M...

User Ratings: 54 26

Smartcoco First Impressions

"Never had any problems."

It will make you wonder why nobody thought of it before. Very accurate, have checked it with other thermometers as well. So much so that I purchased a second set of 6. 6 in a pack, extra batteries, easy set up, great price. I guess these units do not like saltwater. All were Close enough for a fish tank and other uses. They are within a degree or two of other thermometers I've checked to compare them.

  • Smartcoco Digital LCD Screen Sensor Aquarium Thermometer Wired Aquarium Fish Tank Reptile Box Temp Meter Electronic Temperature Measurement
  • Stylish and exquisite digital thermometer for Aquarium
  • LCD screen & High quality suction base & long sensor cable and switch of °C / °F
  • Size: 2.3 x 1.5 x 0.6 in / 5.8×3.7×1.6 cm
  • Suitable for fish tank, reptile box, diving pet box and more
  • Package included: 1* Aquarium Thermometer
  • Manufacture: Smartcoco
  • Editor's Impressions Of The Smartcoco
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Smartcoco Final Thoughts

"Suction cups are okay."

As you can see from my photos, in both°F and°C, all six are within. We are using them to measure various temperatures inside and outside of a motorhome. Simple fix, you adjust the thermometer within the suction cup and VIOLA! I find that the temps are accurate, and this product gives added peace of mind. For something so cheap, they are working remarkably well. I've checked it against two other thermometers that are accurate. Instead she sent a new package of two, both of which work.

Overall Score
3.8


(6 Points)

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