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
  • Quality
  • Value For Money
  • Affordability

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


(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
  • 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)

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
  • Quality
  • Value For Money
  • Affordability

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


(25 Points)

4. Sunsbell Aquarium Thermometer Digital Touch Screen Fish Tank Thermometer with Large LCD Display

Sunsbell 6M1048127R0PHUV First Impressions

"It is within."

Set all six probes up in a terrarium with a constant temp of 88. 82 PER THERMOMETER with battery included. I ordered this guy and it was 6 degrees hotter than the digital! My 50+ eyes cannot read a regular tank thermometer without squinting. I think the people who said the suction cup broke. Excellent working for our bearded dragon tank. It is easy to use and install it'disappears' in your tank it is so unobtrusive.

  • Sunsbell Aquarium Thermometer Digital Touch Screen Fish Tank Thermometer with Large LCD Display
  • Backside temperature sensor can stick on the outside glass of the fish tank prevent water infiltration and electronic Oxidation, compact design with Large Crystal Touch Screen makes it easier to read the temperature far away, stands out among other Fish Tank thermometers.
  • 3.2 large glass screen is larger than most of the thermometers, large temperature display on transparent screen, will not block your view.
  • With an accurate temperature sensor stick on the surface of the fish tank, this Digital aquarium thermometer will display accurate temperature for fish tank, reading from 0°C to 70°C / 32°F - 158°F, accurate to 0.1°.
  • Pull down the red battery cover below the screen, insert battery, close it, stick on and read the tank temperature. press up or down to switch °C / °F.
  • 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, pet tank thermometer.
  • Manufacture: Sunsbell
  • Product Dimensions: 2.95 x 2.95 x 0.28 inches; 2.82 Ounces
  • Editor's Impressions Of The Sunsbell 6M1048127R0PHUV
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Sunsbell 6M1048127R0PHUV Final Thoughts

"Very accurate."

I removed the batteries of the units I wasn't using right away. I have to admit I had two reasons for buying six. I have mine on my 60 gallon cube marine tank. Place it on your aquarium and you are good to go. 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. I used to have a large hang in the side tank that you couldn't miss.

Overall Score
4.0


(1 Points)

5. IDS Digital Dual Scale Aquarium Fish Tank Thermometer Temperature Sticker

User Ratings: 61

IDS First Impressions

"Love it for my turtles."

I recommend gluing the suction cups in place where needed for long-term installation. The lid is textured aluminum, and the suction cups don't stick to that. In the right situation this magnet thermometer is the best available. I have always had trouble reading the color temp. Put them all in the same tank and they read very close to each other. I have mine on my 60 gallon cube marine tank. This thermometer is spot on accurate.

  • IDS Digital Dual Scale Aquarium Fish Tank Thermometer Temperature Sticker
  • 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.
  • Qty: 1 pc.
  • Place on the tank glass outside the aquarium tank Suitable for cold water, tropical and marine aquarium.
  • Size:10cm x 2cm - 3.94inch x 0.79inch.
  • Manufacture: IDS
  • Editor's Impressions Of The IDS
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

IDS Final Thoughts

"No complaints."

So versatile, I can read the temperatures literally anywhere. I can't say which is the most accurate and don't really care. Then is started to give a low reading, and it is not reading the correct temperature. A bit large for anything smaller than 5 gallons, but that's to be expected. These things are useful for a lot besides pet husbandry, too. A battery can last you up to six months, I'd say, but expect more like three. We are using them to measure various temperatures inside and outside of a motorhome.

Overall Score
4.2


(21 Points)

6. SunGrow Digital pH and TDS Meter Set, Accurate Readings, Easy to Read LCD Screen, Monitor Aquarium, ...

User Ratings: 57 6

SunGrow First Impressions

"Great product!"

This thermometer is spot on accurate. 50 thermometers, reads much easier and no suction cup residue, also looks better. I just wrote it off as a minor loss. Checked with temp gun and the terrarium was on target at 88. I bent it a little bit and when I put it back it was perfectly fine. I think the people who said the suction cup broke. Set all six probes up in a terrarium with a constant temp of 88.

  • SunGrow Digital pH and TDS Meter Set, Accurate Readings, Easy to Read LCD Screen, Monitor Aquarium, Fruit, Tap Water, Pool Water, 4 LR44 Batteries Included
  • ✔ TWO-IN-ONE SOLUTION --- This Ph and TDS combo meter by SunGrow will give you the best of both worlds in one device. This SunGrow pack includes electrodes and components needed to test both the pH and TDS of any water solution. It’s easy to use and less equipment to deal with than two separate devices.
  • ✔ ENERGY-SAVING, LIGHTWEIGHT AND PORTABLE DEVICES--- This PH and TDS meter has a handheld pen-type design that weighs barely 1.7 oz making it lightweight and portable. It comes with a handy case that you can easily slip into a backpack or work bag if you need to bring it with you. The meter shuts off automatically after 10-minutes of non-use to conserve batteries. (BATTERIES INCLUDED)
  • ✔ CALIBRATION SCREWDRIVER INCLUDED --- These meters have been factory-calibrated and are designed to stay consistent. However, if you need to recalibrate your meter from time to time or you want to calibrate for different applications, you can use the screwdriver calibration tool included for continued accurate readings of your water. The TDS meter is most accurate when calibrated as close as possible to the sample to be tested.
  • ✔ HIGHLY ACCURATE READINGS --- This pH and TDS professional level water test meter precisely measures and monitors the levels in your aquarium or other liquid solutions. The SunGrow pH and TDS meter will give you extremely accurate readings of the ph levels and Total Dissolved Solid within ± 2% range.
  • ✔ MULTI-USE MEASURING TOOL--- This little tool is a valuable instrument for keeping a tab on various bodies of water. You can use it to make sure the level in your freshwater or saltwater aquarium is optimal for your fish, test water in a laboratory or for the hydroponically grown vegetables. You can also test the swimming pool, tap water, and spa water.
  • Manufacture: Luffy Pets Collection
  • Editor's Impressions Of The SunGrow
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

SunGrow Final Thoughts

"Easy to setup in tank."

When I set up my newest tank I will be getting another one of these. My 50+ eyes cannot read a regular tank thermometer without squinting. Love it, it's easy to read and keeps an accurate temp. I used to have a large hang in the side tank that you couldn't miss. It will make you wonder why nobody thought of it before. Bought the two pack of thermometers. Place it on your aquarium and you are good to go.

Overall Score
4.2


(44 Points)

7. JLENOVEG Reptile Thermometer with Alarm Function Reptile Thermometer Reptile Digital Alarm Thermomet...

User Ratings: 57 5

JLENOVEG First Impressions

"8 C lower than this."

This is my first 5 star review out of many many reviews on Amazon. Instead she sent a new package of two, both of which work. When and if we run out of this batch, I'll instantly order another batch. My poor fish was in 86 degrees water for a month. Far more accurate than the usual small glass ones or external LCD strips. These things are useful for a lot besides pet husbandry, too. Then she followed up again on that, asking if they had arrived and were okay.

  • JLENOVEG Reptile Thermometer with Alarm Function Reptile Thermometer Reptile Digital Alarm Thermometer Reptile Tank Hygrometer with Hook Temperature Humidity Meter for Reptile Tanks, Terrariums
  • Essential Alarm Reptile Thermometer Hygrometer: Monitor temperature and humidity of tanks with this easy to use thermometer hygrometer. Default Alarm arrange: 28 degree (HI); 18 degree (Lo), it can be set by yourself. And pls note: it will only alarm few seconds, then the alarm value will flashing.
  • Stylish Design: Stylish looking digital thermometer with hook for temperature and humidity monitoring. Easy to read, install and operate; this gadget features a digital screen that displays reading in both Fahrenheit and Celsius
  • Fantastic Value to Help Maintain Ideal Environment: While caring for your beloved reppies, temperature plays a quintessential role; When it comes to reptile tanks, we only offer the best quality and accuracy. Reptile Digital Thermometer allows you to closely monitor the right temperature
  • Quality Guaranteed and Accurate Temperature Measurement: Our carefully sourced range of thermometer hygrometers are manufactured to the highest of standards our customers expect
  • Exceptional Customer Service: With size of only 2.44” x 1.57” x 0.66”(62×40×17mm), this can be displayed anywhere in your tank without getting in the way of your pal’s view. With a wealth of experience our Thermometer World teams are here to help with any questions.
  • Manufacture: Poly
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The JLENOVEG
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

JLENOVEG Final Thoughts

"No complaints so far!"

This is my first 5 star review out of many many reviews on Amazon. I can't say which is the most accurate and don't really care. It is my opinion that everyone should have these that are in the Aquarium Hobby. The extra batteries where very much appreciated and came in handy. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. They reviewed the packaging or shipping by saying it arrived broken. I bent it a little bit and when I put it back it was perfectly fine.

Overall Score
4.3


(39 Points)

8. Marina Aqua-Minder Programmable Digital Thermometer

User Ratings: 60 11

Marina 11190 First Impressions

"Sticks easy."

Good cheap accurate aquarium thermometer. I removed the batteries of the units I wasn't using right away. I ordered this guy and it was 6 degrees hotter than the digital! Love it, it's easy to read and keeps an accurate temp. 49 thermometer that is 100% accurate. It works equally well on all of them. The non-working ones still provide 2 batteries each AND.

  • Marina Aqua-Minder Programmable Digital Thermometer
  • Provides continuous monitoring of temperature
  • Six programmable English tasks
  • Measures 32 degrees Fahrenheit to 199 degrees Fahrenheit
  • Ideal for people with busy schedules
  • For better product understanding please refer to the back of the product
  • Manufacture: Marina
  • Product Dimensions: 0.9 x 4.9 x 8 inches; 3.2 Ounces
  • Editor's Impressions Of The Marina 11190
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11190 Final Thoughts

"Perhaps it's my fault."

2 deg, if it was 32, it would be a SOLID block of ice. I can't say which is the most accurate and don't really care. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Very impressed, I have now had them in used for a month so far. However, Lucy at Zacro read this review and emailed me. I think the people who said the suction cup broke. The suction will never be the same.

Overall Score
4.0


(37 Points)

9. Dr. Marine Glass Saltwater Hydrometer Thermometer Reef Soft Coral

User Ratings: 65 9

Aquarium Equip SU First Impressions

"6 tenths of a degree."

These are the perfect size to be easily read while not being obtrusive. You can not swivle the thermometer to face a certain way. The non-working ones still provide 2 batteries each AND. I am extremely pleased with this product. I have mine on my 60 gallon cube marine tank. These are the perfect size to be easily read while not being obtrusive. You can not swivle the thermometer to face a certain way.

  • Dr. Marine Glass Saltwater Hydrometer Thermometer Reef Soft Coral
  • Ensures proper gravity of aquarium water. Easy to use.
  • Ensures all water has the same salinity within aquarium
  • Green indicators are ideal range of water temperature and specific gravity for most salt water / marine aquariums.
  • Measure both Temperature and Specific Gravity of the water.
  • SIZE:19.2CM(7.5"). Glass Hydrometer; Measures Celsius and Fahrenheit
  • Manufacture: SU
  • Product Dimensions: 8.1 x 0.8 x 0.8 inches; 0.96 Ounces
  • Editor's Impressions Of The Aquarium Equip SU
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Aquarium Equip SU Final Thoughts

"Great product!"

A battery can last you up to six months, I'd say, but expect more like three. You can use the thermometer with or without the plastic suction cup. So the extra units will always come in handy. So far I've been very thrilled with these. 6F all six took about three minutes to read between 88. Works well in my betta tank, but provide a couple hours for it to read temp changes. So far, they're all doing their job in my four tanks and I am quite content.

Overall Score
4.2


(100 Points)

10. AoE Performance Aquarium Fish Tank Vertical Thermometer

User Ratings: 53 8

AoE Performance AOE THERM2 First Impressions

"Fish and me happy."

I just wrote it off as a minor loss. They are within a degree or two of other thermometers I've checked to compare them. I got root rot after light leaks and high water temps. So the extra units will always come in handy. 82 PER THERMOMETER with battery included. A bit large for anything smaller than 5 gallons, but that's to be expected. And for the price you cant beat it.

  • AoE Performance Aquarium Fish Tank Vertical Thermometer
  • Accurate range is from 18 C to 34 C
  • Temperature range of the aquarium is shown in both Fahrenheit and Celcius
  • Self adhesive backing
  • Manufacture: AoE Performance
  • Editor's Impressions Of The AoE Performance AOE THERM2
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

AoE Performance AOE THERM2 Final Thoughts

"I like this."

One being a very expensive digital. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. The temperature fluctuated a lot with it. I've checked it against two other thermometers that are accurate. Was going to get a floater until I saw this magnetic one! Checked with temp gun and the terrarium was on target at 88. I used these to raise chicks, and in my parrot cages.

Overall Score
4.0


(75 Points)

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