Editor's Choice - Our Favorite Unknown Aquarium Thermometers

1. LCD Digital Fish Tank Temperature Control Sensor Thermometer Wired Aquarium Fish Tank

Unknown First Impressions

"2 deg of 32."

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. I used these to raise chicks, and in my parrot cages. I have mine on my 60 gallon cube marine tank. I have kept aquariums for about 45 years. So versatile, I can read the temperatures literally anywhere. Still a recommendation for me due to price and accuracy.

  • LCD Digital Fish Tank Temperature Control Sensor Thermometer Wired Aquarium Fish Tank
  • Manufacture: Unknown
  • Editor's Impressions Of The Unknown
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Unknown Final Thoughts

"A solid five stars."

I have this thermometer on all my tanks. So versatile, I can read the temperatures literally anywhere. Simple fix, you adjust the thermometer within the suction cup and VIOLA! At least in the first 3 months of use. For something so cheap, they are working remarkably well. In this scenario it would probably get knocked loose a lot. Still a recommendation for me due to price and accuracy.

Overall Score
4.0


(1 Points)

2. DaToo Aquarium Thermometer Fish Tank Thermometer with Sucker, 1 Yr Warranty

User Ratings: 51

DaToo First Impressions

"THERE'S MORE!"

I got root rot after light leaks and high water temps. So much so that I purchased a second set of 6. Place it on your aquarium and you are good to go. I find that the temps are accurate, and this product gives added peace of mind. Now that the chickens are grown, I have one out in the coop as well. A bit large for anything smaller than 5 gallons, but that's to be expected. The digital display is nice and small as well.

  • DaToo Aquarium Thermometer Fish Tank Thermometer with Sucker, 1 Yr Warranty
  • SIMPLE DESIGN - The DaToo Aquarium Thermometer is an attractive but simple designed unit with no over-complicated controls. The unit itself is blue, and features a clear plastic trim around the edges.
  • WATERPROOF And Wireless - The aquarium thermometer is completely waterproof, you can put it in the fish tank, real-time monitoring of water temperature. Without any cables, make your fish tank look cleaner and increase the playing space of the fish, it will not be bothered by cables.
  • VERY SIMPLE TO OPERATE - Don't need additional instructions. This is the simplest aquarium thermometer on the market with no buttons to operate. Your child can also use it easily!
  • SUCTION PAD FOR EASE OF PLACEMENT - Just find the best spot in the fish tank, then attach the unit with the small suction pad which will keep the thermometer in place until removal is required.
  • WIDE RANGE - The temperature range is from -58°F to 158°F allowing you to use this aquarium thermometer in the majority of temperature conditions.
  • Manufacture: DaToo
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The DaToo
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

DaToo Final Thoughts

"2 degrees of each other."

Very accurate, have checked it with other thermometers as well. Then is started to give a low reading, and it is not reading the correct temperature. These digital thermometers are great and there is no guesswork involved. It works equally well on all of them. I guess these units do not like saltwater. I used to have a large hang in the side tank that you couldn't miss. I ordered a new one and it works GREAT!

Overall Score
4.5


(2 Points)

3. Glass Hydrometer Saltwater Temperature Thermometer Aquarium Fish Tank Marine

Aisoway First Impressions

"It works great."

You can use the thermometer with or without the plastic suction cup. It is large enough to see without being obtrusive. Ordered three of these and they do the job. So the extra units will always come in handy. Set all six probes up in a terrarium with a constant temp of 88. The display can be set to Fahrenheit or Celsius. Have checked them against the glass thermometers and the accuracy is right on.

  • Glass Hydrometer Saltwater Temperature Thermometer Aquarium Fish Tank Marine
  • Aquarium and exo terra reptile tank thermometer.
  • Size: 19.5cm.
  • Package included:1 x Thermometer.
  • Applicable both on the land and in the water.
  • Made of high quality glass, clear and easy to read. Stable and durable enough for a long time use.
  • Manufacture: Aisoway
  • Item Weight: 1.13 ounces
  • Product Dimensions: 1.97 x 1.97 x 1.97 inches
  • Editor's Impressions Of The Aisoway
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Aisoway Final Thoughts

"So glad i got these!"

And for the price you cant beat it. 49 thermometer that is 100% accurate. This company is taking the long term view of how to do business right. The plastic from the suction cup quickly turned from a clear to a milky white. I am extremely pleased with this product. This is how you calibrate a thermometer. This company is taking the long term view of how to do business right.

Overall Score
5.0


(1 Points)

4. Digital Mini Automatic LCD Aquarium Fish Tank Food Feeder Timer up to 4 Feeding Times + High Accurac...

User Ratings: 27 24

hossen B008R6NWOU First Impressions

"LOVE these thermometers."

I think the people who said the suction cup broke. I bent it a little bit and when I put it back it was perfectly fine. I bought these for my dwc reservoirs. So far I've been very thrilled with these. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. Works well in my betta tank, but provide a couple hours for it to read temp changes. I did have a problem with one in my first pack of 6.

  • Digital Mini Automatic LCD Aquarium Fish Tank Food Feeder Timer up to 4 Feeding Times + High Accuracy Submersible Aquarium Index Thermometer
  • Made in China
  • Package height :12.1 cm
  • Package length :8.0 cm
  • Package width :11.1 cm
  • Manufacture: hossen
  • Product Dimensions: 4.8 x 3.15 x 4.41 inches; 6.4 Ounces
  • Batteries: 2 AAA batteries required.
  • Editor's Impressions Of The hossen B008R6NWOU
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

hossen B008R6NWOU Final Thoughts

"This is perfect."

These things are useful for a lot besides pet husbandry, too. You can use the thermometer with or without the plastic suction cup. And I just really started to doubt it. Instead she sent a new package of two, both of which work. 2 deg, if it was 32, it would be a SOLID block of ice. The extra batteries where very much appreciated and came in handy. Very impressed, I have now had them in used for a month so far.

Overall Score
3.3


(165 Points)

5. Zoo Med Digital Thermometer

User Ratings: 71 5

Zoo Med TH-24 First Impressions

"Sticks easy."

When I set up my newest tank I will be getting another one of these. This is my first 5 star review out of many many reviews on Amazon. I used these to raise chicks, and in my parrot cages. I am extremely pleased with this product. I used to have a large hang in the side tank that you couldn't miss. Now if it falls into a sink full of water, it's not a problem. This is my first 5 star review out of many many reviews on Amazon.

  • Zoo Med Digital Thermometer
  • External sensor can go in water
  • Fahrenheit and Celsius
  • LCD readout
  • Pack of 3
  • Manufacture: Zoo Med
  • Product Dimensions: 4 x 1 x 5.3 inches; 0.63 Ounces
  • Editor's Impressions Of The Zoo Med TH-24
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Zoo Med TH-24 Final Thoughts

"They are within 0."

SIX Digital Thermometers with SIX batteries INCLUDED working so well. I have always had trouble reading the color temp. You can use the thermometer with or without the plastic suction cup. Now that the chickens are grown, I have one out in the coop as well. SIX Digital Thermometers with SIX batteries INCLUDED working so well. This thermometer is spot on accurate. I got the second one as a bonus that I'm now using in my old tank.

Overall Score
4.3


(22 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
  • Quality
  • Value For Money
  • Affordability

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


(26 Points)

7. Wodwad Stick On Aquarium Fish Tank Glass Greenhouse Thermometer Temperature Gauge Sticker

User Ratings: 55

Wodwad First Impressions

"Highly Recommended."

Put them all in the same tank and they read very close to each other. And I just really started to doubt it. I have kept aquariums for about 45 years. 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. I have always had trouble reading the color temp. I ordered this guy and it was 6 degrees hotter than the digital!

  • Wodwad Stick On Aquarium Fish Tank Glass Greenhouse Thermometer Temperature Gauge Sticker
  • ✤ Measure the temperature of your fish tank, your DIY Brew Beer and wine barrel, Terrarium, Greenhouse, Vivarium and any sort of pet tank, or any place in your house
  • ✤ The right water temperature is very important for the health of your fish, get your beer and wine right or use in kitchen or around the home to monitor temperature
  • ✤ Easy to install, just peel off the back of the sticker and the transparent protective film at the front and stick it on the outside wall of the aquarium, that is it.
  • ✤ The thermometer changes its color according to the surrounding temperature. If the surrounding temperature is 27°C, then the background of scale mark   27°C will turn colorful and other scale marks remain black.
  • ✤ Measurement range: Celsius degree18-34°C, Fahrenheit degree 64-93°F.
  • Manufacture: Wodwad
  • Editor's Impressions Of The Wodwad
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Wodwad Final Thoughts

"Easy to setup in tank."

And for the price you cant beat it. 49 thermometer that is 100% accurate. It is about 6 inches in length and roughly an inch wide. The plastic from the suction cup quickly turned from a clear to a milky white. Sure enough the digital thermometer was way off by 6 degrees! Good cheap accurate aquarium thermometer. I read some of the 1 star reviews and most of them are not about the product.

Overall Score
4.6


(5 Points)

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

User Ratings: 55 17

AUTIDEFY First Impressions

"Would buy again."

It is about 6 inches in length and roughly an inch wide. Now if it falls into a sink full of water, it's not a problem. 6 in a pack, extra batteries, easy set up, great price. It works equally well on all of them. 89 I could buy Six Thermometers with Six included batteries. Ordered three of these and they do the job. Excellent working for our bearded dragon tank.

  • 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:4 x Digital Thermometer; 4 x Battery; 4 x Probe
  • Manufacture: AUTIDEFY
  • Editor's Impressions Of The AUTIDEFY
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

AUTIDEFY Final Thoughts

"Close enough I reckon!"

2 deg, if it was 32, it would be a SOLID block of ice. A battery can last you up to six months, I'd say, but expect more like three. It will make you wonder why nobody thought of it before. So versatile, I can read the temperatures literally anywhere. Have checked them against the glass thermometers and the accuracy is right on. Then she followed up again on that, asking if they had arrived and were okay. This is my first 5 star review out of many many reviews on Amazon.

Overall Score
3.9


(138 Points)

9. Qooltek Mini Digital Hygrometer Thermometer Indoor Humidity Monitor with Temperature Humidity Gauge ...

User Ratings: 65 6

Qooltek BFBA-0009 First Impressions

"Great little thermometer."

I removed the batteries of the units I wasn't using right away. Works well in my betta tank, but provide a couple hours for it to read temp changes. 6F all six took about three minutes to read between 88. All are pretty accurate within one degree as claimed. When I set up my newest tank I will be getting another one of these. My poor fish was in 86 degrees water for a month. Was going to get a floater until I saw this magnetic one!

  • Qooltek Mini Digital Hygrometer Thermometer Indoor Humidity Monitor with Temperature Humidity Gauge Meter for Cars Incubators and Brooders Climb Pet (Fahrenheit)
  • Mini Digital LCD Thermometer Humidity Temperature.
  • Temperature Range: -40°F ~ 140°F
  • Measuring Humidity Range: 10% RH ~ 95% RH
  • Humidity Accuracy:5% ; Humidity Display Resolution: 1% RH
  • Mini size perfect to use in incubators, brooders, cigar humidors,reptile tank. If you do not like the small temperature display, you can consider the new hygrometer thermometer - ASIN B079JB3YYL
  • Manufacture: Qooltek
  • Part Number: 050-029
  • Material: Metal
  • Item Weight: 0.705 ounces
  • Product Dimensions: 1.18 x 0.59 x 1.97 inches
  • Color: Black
  • Batteries: 2 LR44 batteries required. (included)
  • Power Source: Battery Powered
  • Batteries Included?: Yes
  • Batteries Required?: Yes
  • Editor's Impressions Of The Qooltek BFBA-0009
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Qooltek BFBA-0009 Final Thoughts

"Suction cups fail."

And for the price you cant beat it. I have mine on my 60 gallon cube marine tank. This temperature read a perfect 32 degrees. This thermometer is spot on accurate. These things are useful for a lot besides pet husbandry, too. Ordered three of these and they do the job. I'm pretty sure those reviewers have acrylic tanks.

Overall Score
4.3


(357 Points)

10. POPETPOP LCD Digital Aquarium Thermometer High Precision Digital Fish Tank Thermometer for Aquarium/...

User Ratings: 60 7

POPETPOP First Impressions

"I am new to the hobby."

Very impressed, I have now had them in used for a month so far. Now if it falls into a sink full of water, it's not a problem. I use a small flashlight if I don't want to brighten the area. So much so that I purchased a second set of 6. This little wonder allows me to see at a glance that everything is as it should be. I find that the temps are accurate, and this product gives added peace of mind. In the right situation this magnet thermometer is the best available.

  • POPETPOP LCD Digital Aquarium Thermometer High Precision Digital Fish Tank Thermometer for Aquarium/Pond/Reptile Turtles Habitats (Blue)
  • TEMPERATURE - Temperature range is -20℃ ~ + 70℃. Temperature accuracy is ±1℃(±2℉). Update measured temperature every 10 seconds.
  • READINGS - LCD screen displays measured temperature which can be switched between ℃ and ℉, and it can save the maximum and minimum readings during past tests.
  • SCREEN - Large screen displays clearly, no dead corner on the left or right make it looks more beautiful. Besides, if you want a clearer screen displays, you can remove the screen protector.
  • INSTALLATION - Easy and convenient to install at fish tank with suction cup or spring clip that make sure space-saving and portable. You can put this small thermometer at anyplace you want to place. (Please only submerge probe, don't submerge thermometer in water)
  • MATERIAL - Eco-friendly ABS shell which is tough and hard. Excellent mechanical properties make the device safer, wear-resistant and stable. High accuracy with professional sensor, it can measure temperature more correctly than same product. Powered by two AG13 button cells (included).
  • Manufacture: POPETPOP
  • Product Dimensions: 2.76 x 2.76 x 1.18 inches; 1.8 Ounces
  • Editor's Impressions Of The POPETPOP
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

POPETPOP Final Thoughts

"Subtracted from the tank."

Simple fix, you adjust the thermometer within the suction cup and VIOLA! He acted aggressively towards it and so I ultimate ended up removing it due to that. 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. Now if it falls into a sink full of water, it's not a problem. He was moving slow in the winter and we realized he needed a heater! Works well in my betta tank, but provide a couple hours for it to read temp changes.

Overall Score
4.2


(105 Points)

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