Editor's Choice - Our Favorite AquaTop Aquarium Thermometers

1. AquaTop ATP Thermometer Submersible

User Ratings: 28 16

AquaTop DTG-15 First Impressions

"Very accurate."

So, in those cases, I find it easier to simply replace it. I have always had trouble reading the color temp. So far, they're all doing their job in my four tanks and I am quite content. For something so cheap, they are working remarkably well. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. I used to have a large hang in the side tank that you couldn't miss. My only complaint is that they tend to be a one time use.

  • AquaTop ATP Thermometer Submersible
  • The sleek, compact designs provide easy placement, making the DTG-15 and dtg-25 the perfect choice for aquariums of all sizes.
  • The digital thermometers are accurate to +/- 2 degrees Fahrenheit.
  • The DTG-15 is fully submersible and has a suction cup mount.
  • The dtg-25 has an adhesive back for easy installation and must be mounted externally.
  • Suction Cup mount
  • Manufacture: Aquatop
  • Product Dimensions: 8 x 3 x 2 inches; 1.41 Ounces
  • Editor's Impressions Of The AquaTop DTG-15
  • Thermometer Accuracy [star rating='4']
  • Quality [star rating='3.1']
  • Value For Money [star rating='3.3']
  • Affordability [star rating='2.4']

AquaTop DTG-15 Final Thoughts

"I opened the first three."

I was using one of those ubiquitous cheap digital thermometers on Amazon. These digital thermometers are great and there is no guesswork involved. You dont HAVE to stick the display onto your tank. Works well in my betta tank, but provide a couple hours for it to read temp changes. I can't say which is the most accurate and don't really care. So much easier than the ones that hang on the inside. This temperature read a perfect 32 degrees.

Overall Score
3.1

[star rating="3.1"]
(6 Points)

Peoples Choice - Other Highly Rated AquaTop Aquarium Thermometers

2. Aquarium Digital Thermometer

User Ratings: 52

AquaTop DTG-25 First Impressions

"Versatile."

I came here to give this product a positive review. The only reason I didn't give this 5 stars is because my betta fish didn't like it. When I set up my newest tank I will be getting another one of these. So the extra units will always come in handy. You can glue, tape or simply cover the cords in the tank to keep them discreet. This little wonder allows me to see at a glance that everything is as it should be. Bought the two pack of thermometers.

  • Aquarium Digital Thermometer
  • Included Components: Atp Thermometer External Dual
  • Age Range Description: All Life Stages
  • Manufacture: Aquatop
  • Product Dimensions: 8 x 3 x 2 inches; 3.84 Ounces
  • Editor's Impressions Of The AquaTop DTG-25
  • Thermometer Accuracy [star rating='4.6']
  • Quality [star rating='4.9']
  • Value For Money [star rating='3']
  • Affordability [star rating='4.4']

AquaTop DTG-25 Final Thoughts

"They are within 0."

A battery can last you up to six months, I'd say, but expect more like three. This company is taking the long term view of how to do business right. I got the second one as a bonus that I'm now using in my old tank. Love it, it's easy to read and keeps an accurate temp. Now if it falls into a sink full of water, it's not a problem. 50 thermometers, reads much easier and no suction cup residue, also looks better. It started working as soon as I put it in and has been working ever since.

Overall Score
4.0

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

3. SUKRAGRAHA Traditional Stick-on Aquarium Thermometers Temperature Strip Celsius Fahrenheit Display 1...

User Ratings: 72 5

SUKRAGRAHA First Impressions

"Love this product!"

This temperature read a perfect 32 degrees. I got root rot after light leaks and high water temps. I'm pretty sure those reviewers have acrylic tanks. These things are useful for a lot besides pet husbandry, too. I have mine on my 60 gallon cube marine tank. The display can be set to Fahrenheit or Celsius. I read some of the 1 star reviews and most of them are not about the product.

  • SUKRAGRAHA Traditional Stick-on Aquarium Thermometers Temperature Strip Celsius Fahrenheit Display 10 pc (18~34C Not for Fever)
  • 10 pcs Set
  • Dimensions: 5.12 x 0.71 inch / 13.0 x 1.8 cm
  • Measuring range: 18~34 Degree C (64~93 Degree F)
  • Adhesive by the back, just peel off the tape and attach to outside /surface of aquarium
  • Different temperature with different color
  • Manufacture: SUKRAGRAHA
  • Editor's Impressions Of The SUKRAGRAHA
  • Thermometer Accuracy [star rating='4.1']
  • Quality [star rating='4']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4.2']

SUKRAGRAHA Final Thoughts

"Great price."

It is my opinion that everyone should have these that are in the Aquarium Hobby. The digital display itself is easy to read at a glance. 6 in a pack, extra batteries, easy set up, great price. I removed the batteries of the units I wasn't using right away. It is always where yo last put it and it is very easy to see and read. 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.

Overall Score
4.5

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

4. KEWAYO 4 Pieces Fast Read Aquarium Thermometer - Simple Setting, Accurate Reading, Suitable for Aqua...

User Ratings: 43 33

KEWAYO First Impressions

"It is within."

I ordered this guy and it was 6 degrees hotter than the digital! I'm pretty sure those reviewers have acrylic tanks. The suction works for a month at a time- in pool and hot tub circulation. 2 deg, if it was 32, it would be a SOLID block of ice. My only complaint is that they tend to be a one time use. All are pretty accurate within one degree as claimed. At least in the first 3 months of use.

  • KEWAYO 4 Pieces Fast Read Aquarium Thermometer - Simple Setting, Accurate Reading, Suitable for Aquarium, Reptile, Turtle
  • Measurement range: Celsius degree18-34C, Fahrenheit degree 64-93F
  • Monitor the temperature of the fish tank - keep the fish, shrimp, reptiles, and turtle to make sure that the water is not too hot or too cold. The irregular water temperature can be harmful to the health of your fish
  • Easy to install, can be adsorbed outside of the Aquarium, to help you observe the temperature of the water in your aquarium and keep a watchful eye on the living environment of your pet fish.
  • The thermometer changes its color according to the surrounding temperature
  • Aquarium Thermometer is suitable for any size aquarium
  • Manufacture: KEWAY
  • Product Dimensions: 7.9 x 4.7 x 0.05 inches; 0.64 Ounces
  • Editor's Impressions Of The KEWAYO
  • Thermometer Accuracy [star rating='2.8']
  • Quality [star rating='3.8']
  • Value For Money [star rating='3.3']
  • Affordability [star rating='3.2']

KEWAYO Final Thoughts

"I opened the first three."

Have checked them against the glass thermometers and the accuracy is right on. I used these to raise chicks, and in my parrot cages. Instead she sent a new package of two, both of which work. Was going to get a floater until I saw this magnetic one! This doesn't bother me as it ws so cheap. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. One of my aquariums is glass, and the other two are plastic.

Overall Score
3.4

[star rating="3.4"]
(20 Points)

5. Vertical Aquarium Thermometer Mini

User Ratings: 77

LCR Hallcrest DPP30961 First Impressions

"Holds a steady 1."

6F all six took about three minutes to read between 88. My poor fish was in 86 degrees water for a month. I recommend gluing the suction cups in place where needed for long-term installation. 2 deg, if it was 32, it would be a SOLID block of ice. You can use the thermometer with or without the plastic suction cup. Water tested with Autidefy brand for two hours. Excellent working for our bearded dragon tank.

  • Vertical Aquarium Thermometer Mini
  • 5 mil thickness
  • 3 inch X 1 inch dimensions
  • Vertically mounted
  • Fahrenheit scale
  • Manufacture: LCR Hallcrest
  • Editor's Impressions Of The LCR Hallcrest DPP30961
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4']

LCR Hallcrest DPP30961 Final Thoughts

"Very accurate."

Place it on your aquarium and you are good to go. At least in the first 3 months of use. Still a recommendation for me due to price and accuracy. You dont HAVE to stick the display onto your tank. In this scenario it would probably get knocked loose a lot. I removed the batteries of the units I wasn't using right away. I tested this in a cup crammed full of ice and some water.

Overall Score
4.8

[star rating="4.8"]
(5 Points)

6. REPTI ZOO 2 Pack Reptile Terrarium Thermometer Hygrometer Digital Display Pet Rearing Box Reptiles T...

User Ratings: 69 2

REPTI ZOO First Impressions

"They all were within."

This is how you calibrate a thermometer. Sure enough the digital thermometer was way off by 6 degrees! Very accurate, have checked it with other thermometers as well. I was using one of those ubiquitous cheap digital thermometers on Amazon. Now if it falls into a sink full of water, it's not a problem. 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.

  • REPTI ZOO 2 Pack Reptile Terrarium Thermometer Hygrometer Digital Display Pet Rearing Box Reptiles Tank Thermometer Hygrometer with Suction Cup
  • Accurate measure temperature and humidity in vivariums, hatchers, brooders, propagators, etc
  • Digital display and easy to read on clear LED screen, two modes of mounting the suction cup make you can put the thermo-hygrometer on the front or side glass of terrariums as your request.
  • Easy to install: suction cup can be adsorbed firmly on the side or back of the terrarium
  • One extra battery is included for standby in the package, two batteries can use for more than one year
  • 100% quality guarantee: we provide 12 months quality guarantee,if you have any question about our product,please contact us,we will reply and help you in 24 hours
  • Material:Plastic
  • Power supply:1xLR1130/AG10 button cell(included)
  • Temperature range:14℉ to 122℉
  • Manufacture: REPTI ZOO
  • Editor's Impressions Of The REPTI ZOO
  • Thermometer Accuracy [star rating='3.9']
  • Quality [star rating='4.4']
  • Value For Money [star rating='3.6']
  • Affordability [star rating='4.5']

REPTI ZOO Final Thoughts

"Hope this helps!"

And is easily hidden behind a plant. This company is taking the long term view of how to do business right. I used these to raise chicks, and in my parrot cages. Water tested with Autidefy brand for two hours. I use a small flashlight if I don't want to brighten the area. For the price I'll probably end up putting these in all of my aquariums. I had my heater set at 73-degrees and the thermometers showed 74.

Overall Score
4.3

[star rating="4.3"]
(34 Points)

7. VIVOSUN 1-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature with Suction C...

User Ratings: 73 3

VIVOSUN First Impressions

"Fish and me happy."

The display can be set to Fahrenheit or Celsius. I have kept aquariums for about 45 years. The plastic from the suction cup quickly turned from a clear to a milky white. My poor fish was in 86 degrees water for a month. Very accurate, have checked it with other thermometers as well. I was using one of those ubiquitous cheap digital thermometers on Amazon. Put them all in the same tank and they read very close to each other.

  • VIVOSUN 1-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature with Suction Cup for Turtle
  • HIGH ACCURACY: Temperature Range: -50℃ ~ +70℃ (-58 °F ~ +158 °F); This aquarium thermometer is accurate to +/- 1℃, no matter whether the probe is placed in any corner of this fish tank, an accurate temperature will be displayed
  • LCD DISPLAY: Comes with a large LCD display that is easy to read clearly and accurately
  • ADJUSTABLE UNIT TEMPERATURE: Easy to adjust the temp between Fahrenheit and Celsius displays; Long-press the power button to adjust the unit display
  • TWO SUCTION CUPS: Equipped with two suction cups, one for attaching the cable to the side of the tank and another for attaching the thermometer
  • SUPER LONG CABLE: The cable length connected to the probe is 78.74 inch (2 m) superior to 23.62 inch (60 cm) standard cable length; Allows accurate temperature measurements in even the largest fish tanks
  • 1. Open the battery cover on the back of this thermometer and insert the button battery to ensure the “+” positive electrode is face up;
  • 2. Use one suction cup to attach the back of this thermometer, then fix this unit to the outer of this fish tank, another suction cup is for attaching the cable;
  • 3. Submerge the probe attached cable into the fish tank;
  • Manufacture: VIVOSUN
  • Editor's Impressions Of The VIVOSUN
  • Thermometer Accuracy [star rating='3.8']
  • Quality [star rating='5']
  • Value For Money [star rating='4']
  • Affordability [star rating='5']

VIVOSUN Final Thoughts

"So we are ordering more."

He was moving slow in the winter and we realized he needed a heater! Who knows, whatever it was, it was revolting! I removed the batteries of the units I wasn't using right away. I used to have a large hang in the side tank that you couldn't miss. 49 thermometer that is 100% accurate. At least in the first 3 months of use. The temperature fluctuated a lot with it.

Overall Score
4.6

[star rating="4.6"]
(1062 Points)

8. 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 [star rating='3.8']
  • Quality [star rating='3.9']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='2.7']

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

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

9. AQUANEAT 3 Pack Aquarium Thermometer, Reptile Thermometer, Fish Tank Thermometer, Digital Thermomete...

User Ratings: 67 9

AQUANEAT DT-A045x3 First Impressions

"Overall a great buy."

These things are useful for a lot besides pet husbandry, too. I used to have a large hang in the side tank that you couldn't miss. When I set up my newest tank I will be getting another one of these. Far more accurate than the usual small glass ones or external LCD strips. This doesn't bother me as it ws so cheap. Far more accurate than the usual small glass ones or external LCD strips. Good cheap accurate aquarium thermometer.

  • AQUANEAT 3 Pack Aquarium Thermometer, Reptile Thermometer, Fish Tank Thermometer, Digital Thermometer, Terrarium Water Temperature Test, with Large LCD Display
  • Wide application: Ideal for use in water or high moisture environment like aquarium terrarium, or vivarium; suitable for different water types such as fresh water, tap water, salty water, marine water and etc
  • Easy to read: Comes with a large LCD display that is easy to read clearly
  • Easy to setup: Submerge probe with suction cup can easily be set in water (Submerge probe only, do not submerge thermometer in water) ; Press ''PWR'' for 3 seconds to power off
  • Free extra LR44: 2 PCS LR44 button cell for each thermometer (one for operation, one for spare)
  • Wide temperature range: Measure -58°F to +158°F (-50°C to +70°C) with accuracy +/- 1°C
  • Manufacture: AQUANEAT
  • Editor's Impressions Of The AQUANEAT DT-A045x3
  • Thermometer Accuracy [star rating='3.3']
  • Quality [star rating='4.8']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='4.7']

AQUANEAT DT-A045x3 Final Thoughts

"Works perfect."

I don't think they are backlit but for the price they are still nice. I used these to raise chicks, and in my parrot cages. Now if it falls into a sink full of water, it's not a problem. I have bought many many temperature gauges for my various fish tanks over the years. I bent it a little bit and when I put it back it was perfectly fine. I find that the temps are accurate, and this product gives added peace of mind. I am extremely pleased with this product.

Overall Score
4.2

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

10. (2 Pack) Zoo Med Economy Analog Dual Thermometer and Humidity Gauge

User Ratings: 72 3

Zoo Med TH-27 First Impressions

"Appears to be accurate."

Then she followed up again on that, asking if they had arrived and were okay. Only thing I don't love is how long the cord is. 6 inch long Bala Sharks that are known to be very unruly and boisterous. Simple fix, you adjust the thermometer within the suction cup and VIOLA! We are using them to measure various temperatures inside and outside of a motorhome. I think the people who said the suction cup broke. So, in those cases, I find it easier to simply replace it.

  • (2 Pack) Zoo Med Economy Analog Dual Thermometer and Humidity Gauge
  • Allows precise monitoring of both the temperature and humidity of your terrarium from one unit
  • Temperature and humidity levels are extremely important to the long term heath of your animals
  • Velcro backing enables easy removal for cleaning or relocation
  • New Dual Analog Terrarium Thermometer/Hygrometer
  • Pack of 2
  • Manufacture: Zoo Med
  • Product Dimensions: 6 x 2 x 4 inches; 1.6 Ounces
  • Editor's Impressions Of The Zoo Med TH-27
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='3.7']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4.9']

Zoo Med TH-27 Final Thoughts

"Great product!"

I use a small flashlight if I don't want to brighten the area. As you can see from my photos, in both°F and°C, all six are within. Since it is a mercury thermometer, it is very accurate. They reviewed the packaging or shipping by saying it arrived broken. One extra battery came with each unit. 89 I could buy Six Thermometers with Six included batteries. You dont HAVE to stick the display onto your tank.

Overall Score
4.5

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

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