Editor's Choice - Our Favorite AUTIDEFY Aquarium Thermometers

1. 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)

Peoples Choice - Other Highly Rated AUTIDEFY Aquarium Thermometers

2. 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 [star rating='4']
  • Quality [star rating='2.9']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='3.8']

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

[star rating="3.9"]
(138 Points)

3. AUTIDEFY LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature (2Pack+10Pack)

User Ratings: 50 11

AUTIDEFY First Impressions

"Only thing the battries."

In this scenario it would probably get knocked loose a lot. Water tested with Autidefy brand for two hours. For the price I'll probably end up putting these in all of my aquariums. One of my aquariums is glass, and the other two are plastic. I got root rot after light leaks and high water temps. It is my opinion that everyone should have these that are in the Aquarium Hobby. I can't say which is the most accurate and don't really care.

  • AUTIDEFY LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature (2Pack+10Pack)
  • Submerge probe into fish tank to measure water temperature (Submerge probe only, do not submerge thermometer in water)
  • LED Digital °C /° F thermometer;Temperature range -50°c ~ + 70°c,Operating temperature -10°c ~ +50°c
  • Sticker Thermometer Dimensions: 5.12” tall by 0.7” wide (13cm x 1.8cm)
  • Adhesive on the back, just peel off the tape and attach to the outside surface.
  • Package Contents: 2 x Digital Thermometer; 10 x Stick-on Thermometer
  • Manufacture: AUTIDEFY
  • Editor's Impressions Of The AUTIDEFY
  • Thermometer Accuracy [star rating='4.5']
  • Quality [star rating='3.6']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='4.7']

AUTIDEFY Final Thoughts

"Drop in the probe."

The digital display is nice and small as well. The only reason I didn't give this 5 stars is because my betta fish didn't like it. So much easier than the ones that hang on the inside. Still a recommendation for me due to price and accuracy. It will make you wonder why nobody thought of it before. And I just really started to doubt it. And I just really started to doubt it.

Overall Score
3.8

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

4. Zoo Med Digital Aquatic Turtle Thermometer (2 Pack)

User Ratings: 41 29

Zoo Med TH26 First Impressions

"I like these."

This temperature read a perfect 32 degrees. I have this thermometer on all my tanks. 89 I could buy Six Thermometers with Six included batteries. The non-working ones still provide 2 batteries each AND. The digital display itself is easy to read at a glance. A bit large for anything smaller than 5 gallons, but that's to be expected. I used these to raise chicks, and in my parrot cages.

  • Zoo Med Digital Aquatic Turtle Thermometer (2 Pack)
  • Replacement Battery Included
  • Fully submersible
  • Fahrenheit Scale
  • Manufacture: Zoo Med Laboratories
  • Product Dimensions: 4 x 1 x 4 inches; 3.2 Ounces
  • Editor's Impressions Of The Zoo Med TH26
  • Thermometer Accuracy [star rating='2.5']
  • Quality [star rating='3.6']
  • Value For Money [star rating='2.7']
  • Affordability [star rating='3.4']

Zoo Med TH26 Final Thoughts

"Works perfect."

I don't think they are backlit but for the price they are still nice. The digital display is nice and small as well. I got root rot after light leaks and high water temps. I have it in both my aquariums now. 89 I could buy Six Thermometers with Six included batteries. When and if we run out of this batch, I'll instantly order another batch. One extra battery came with each unit.

Overall Score
3.3

[star rating="3.3"]
(45 Points)

5. Jansamn Brewing Thermometer Strip, Adhesive Strip Thermometer, Aquarium Thermometer Sticker,Thermome...

User Ratings: 70 4

Jansamn First Impressions

"Great deal."

I have it in both my aquariums now. I am extremely pleased with this product. It is my opinion that everyone should have these that are in the Aquarium Hobby. For something so cheap, they are working remarkably well. You dont HAVE to stick the display onto your tank. I have mine on my 60 gallon cube marine tank. This company is taking the long term view of how to do business right.

  • Jansamn Brewing Thermometer Strip, Adhesive Strip Thermometer, Aquarium Thermometer Sticker,Thermometer Sticker for Fish Tank/Kombucha,39℉ to 97℉ & 4℃ to 36℃
  • ★ Displays Degree Centigrade Fahrenheit ★ The thermometer strip has a range of 39℉ to 97℉ and 4℃ to 36℃. The large numbers are Fahrenheit and the small numbers are Centigrade
  • ★ Easy To Stick On ★ The Simply pulled the backing off to reveal the adhesive back and applied to the front of your fish tank/aquarium/carboy/jar/fermentation bucket. Great way to keep a quick eye on your fish tank/wine jar/kombucha temp
  • ★ Easy To Read ★ The thermometer strips is a piece of temperature sensitive paper.The colored marking shows the current temperature. If show multi-color,please choose the average value
  • ★ Kindly Tips ★ The best kombucha brew temp is 78℉ to 85℉.Keep your betta’s water between 78℉ to 80℉
  • ★ 100% Satisfaction★ We aim to provide the highest quality service and the best product quality for each customer. Place your order without any worry. If you have any question, please feel free contact us. We will unconditionally solve for you!
  • Manufacture: J710654936357
  • Editor's Impressions Of The Jansamn
  • Thermometer Accuracy [star rating='3.6']
  • Quality [star rating='4']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.9']

Jansamn Final Thoughts

"Or left a mark."

This is how you calibrate a thermometer. I find that the temps are accurate, and this product gives added peace of mind. 2 deg, if it was 32, it would be a SOLID block of ice. If the digital display starts to get dim, it's time for a new battery. All were Close enough for a fish tank and other uses. I used these to raise chicks, and in my parrot cages. 89 I could buy Six Thermometers with Six included batteries.

Overall Score
4.5

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

6. BOYU BT-01 Glass Thermometer for Aquarium

User Ratings: 55 20

BOYU BT-01 First Impressions

"LOVE these thermometers."

One being a very expensive digital. You can use the thermometer with or without the plastic suction cup. So far, they're all doing their job in my four tanks and I am quite content. I have to admit I had two reasons for buying six. So far I've been very thrilled with these. This doesn't bother me as it ws so cheap. However, Lucy at Zacro read this review and emailed me.

  • BOYU BT-01 Glass Thermometer for Aquarium
  • Easy-to-read floating thermometer with suction cups
  • Includes a safety zone indicator
  • Ensures your aquarium is at a proper temperature
  • Celsius or Fahrenheit options
  • Manufacture: Tin Tin Trading Inc.
  • Product Dimensions: 1 x 1 x 4.5 inches; 0.64 Ounces
  • Editor's Impressions Of The BOYU BT-01
  • Thermometer Accuracy [star rating='4.4']
  • Quality [star rating='3.8']
  • Value For Money [star rating='3.4']
  • Affordability [star rating='3.7']

BOYU BT-01 Final Thoughts

"Very easy to read."

6 in a pack, extra batteries, easy set up, great price. Ambient room temperature measures 72. If the digital display starts to get dim, it's time for a new battery. I've checked it against two other thermometers that are accurate. A bit large for anything smaller than 5 gallons, but that's to be expected. The temperature fluctuated a lot with it. One being a very expensive digital.

Overall Score
3.7

[star rating="3.7"]
(161 Points)

7. GuDoQi Aquarium Thermometers, 4 Pack Digital Water Thermometer with Suction Cup for Fish Tank, Aquar...

User Ratings: 62 7

GuDoQi First Impressions

"Doing the math."

The lid is textured aluminum, and the suction cups don't stick to that. For something so cheap, they are working remarkably well. The plastic from the suction cup quickly turned from a clear to a milky white. I have kept aquariums for about 45 years. As you can see from my photos, in both°F and°C, all six are within. This little wonder allows me to see at a glance that everything is as it should be. I can't say which is the most accurate and don't really care.

  • GuDoQi Aquarium Thermometers, 4 Pack Digital Water Thermometer with Suction Cup for Fish Tank, Aquarium, Marine Reptile Habitat Temperature
  • Function: Digital thermometer for aquarium
  • Easy to install: Suction base, easy to install
  • LCD screen: a simple appearance and a easy to read LCD display
  • Durable materials: Ideal for use in refrigerators, chillers and deep freezes, the thermometer has a range of -50 degree to + 70 degree
  • Portable: Light weight, small size easy to carry
  • Manufacture: QBY
  • Item Weight: 1.41 ounces
  • Product Dimensions: 2.28 x 1.46 x 0.67 inches
  • Batteries: 1 Lithium Metal batteries required. (included)
  • Editor's Impressions Of The GuDoQi
  • Thermometer Accuracy [star rating='4.1']
  • Quality [star rating='4.8']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4']

GuDoQi Final Thoughts

"It's accurate I tell you."

They are within a degree or two of other thermometers I've checked to compare them. If the digital display starts to get dim, it's time for a new battery. I use a small flashlight if I don't want to brighten the area. I did have a problem with one in my first pack of 6. He acted aggressively towards it and so I ultimate ended up removing it due to that. 82 PER THERMOMETER with battery included. Then she followed up again on that, asking if they had arrived and were okay.

Overall Score
4.2

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

8. capetsma Reptile Thermometer, Digital Thermometer Hygrometer for Reptile Terrarium, Temperature and ...

User Ratings: 67 2

capetsma First Impressions

"Doing the math."

It works equally well on all of them. I tested this in a cup crammed full of ice and some water. I bent it a little bit and when I put it back it was perfectly fine. 6 inch long Bala Sharks that are known to be very unruly and boisterous. He acted aggressively towards it and so I ultimate ended up removing it due to that. The suction will never be the same. So far, they're all doing their job in my four tanks and I am quite content.

  • capetsma Reptile Thermometer, Digital Thermometer Hygrometer for Reptile Terrarium, Temperature and Humidity Monitor in Acrylic and Glass Terrarium,Accurate - Easy to Read - No Messy Wires…
  • Manufacture: capetsma
  • Product Dimensions: 2.09 x 1.3 x 0.59 inches; 1.45 Ounces
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The capetsma
  • Thermometer Accuracy [star rating='3.7']
  • Quality [star rating='5']
  • Value For Money [star rating='4']
  • Affordability [star rating='4']

capetsma Final Thoughts

"Love it for my turtles."

Love it, it's easy to read and keeps an accurate temp. So much so that I purchased a second set of 6. I have mine on my 60 gallon cube marine tank. I ordered this guy and it was 6 degrees hotter than the digital! Set all six probes up in a terrarium with a constant temp of 88. Sure enough the digital thermometer was way off by 6 degrees! I've checked it against two other thermometers that are accurate.

Overall Score
4.4

[star rating="4.4"]
(200 Points)

9. uxcell Digital Aquarium Thermometer Celsius with Probe for Fish Tank Refrigerator 3pcs

uxcell First Impressions

"I immediately ordered it."

I had my heater set at 73-degrees and the thermometers showed 74. So this is the extreme end of the high temperature range. So this is the extreme end of the high temperature range. This thermometer is spot on accurate. Good cheap accurate aquarium thermometer. 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.

  • uxcell Digital Aquarium Thermometer Celsius with Probe for Fish Tank Refrigerator 3pcs
  • Temperature range: -50℃ ~ 110℃ (-58°F ~ + 158°F)
  • Designed to be embedded or can be surface mounted
  • Battery Operated (included) (Aprox 2 year battery life)
  • Remote wired probe can read temperature up to 3.3 feet away
  • Perfect for use in refrigerator, aquarium tank, fish tank, pet cage, bedroom or any other place that requires monitoring of temperature.
  • Manufacture: uxcell
  • Editor's Impressions Of The uxcell
  • Thermometer Accuracy [star rating='3.7']
  • Quality [star rating='3.6']
  • Value For Money [star rating='4.9']
  • Affordability [star rating='4.5']

uxcell Final Thoughts

"Super easy."

He was moving slow in the winter and we realized he needed a heater! The plastic from the suction cup quickly turned from a clear to a milky white. Since it is a mercury thermometer, it is very accurate. In this scenario it would probably get knocked loose a lot. I bent it a little bit and when I put it back it was perfectly fine. Now if it falls into a sink full of water, it's not a problem. Place it on your aquarium and you are good to go.

Overall Score
4.0

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

10. Lifestyler New Glass Meter Aquarium Fish Tank Water Temperature Thermometer Suction Cup

Lifestyler First Impressions

"Never had any problems."

This company is taking the long term view of how to do business right. So versatile, I can read the temperatures literally anywhere. The display can be set to Fahrenheit or Celsius. 6 inch long Bala Sharks that are known to be very unruly and boisterous. I bought these for my dwc reservoirs. Works well in my betta tank, but provide a couple hours for it to read temp changes. I needed a solution that was not breakable and these do the trick!

  • Lifestyler New Glass Meter Aquarium Fish Tank Water Temperature Thermometer Suction Cup
  • Clearly readable scale tells you to understand the temperature at two degrees Celsius and Fahrenheit.
  • Since this thermometer is in the tank, it reads the water temperature exactly as it is.
  • It is floating and fixed by the attached sucker.
  • Easy to install, simply place it in the tank and connect the suction cup to the inside of the tank for easy reading.
  • Test range: 0 ~ 40 ℃
  • Manufacture: Lifestyler
  • Item Weight: 1.76 Ounces
  • Editor's Impressions Of The Lifestyler
  • Thermometer Accuracy [star rating='4.4']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.6']

Lifestyler Final Thoughts

"Appears to be accurate."

I think the people who said the suction cup broke. When I set up my newest tank I will be getting another one of these. And is easily hidden behind a plant. The display can be set to Fahrenheit or Celsius. This doesn't bother me as it ws so cheap. One extra battery came with each unit. You can glue, tape or simply cover the cords in the tank to keep them discreet.

Overall Score
5.0

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

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