Editor's Choice - Our Favorite Neptonion Aquarium Thermometers

1. Neptonion Aquarium Thermometer LCD Digital Aquarium Thermometer with Suction Cup Fish Tank Water Ter...

User Ratings: 72 5

Neptonion First Impressions

"Buy these."

So far I've been very thrilled with these. 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. It is easy to use and install it'disappears' in your tank it is so unobtrusive. It is large enough to see without being obtrusive. I don't think i'll ever be able to trust a digital thermometer again. It started working as soon as I put it in and has been working ever since.

  • Neptonion Aquarium Thermometer LCD Digital Aquarium Thermometer with Suction Cup Fish Tank Water Terrarium Temperature for Fish and Reptiles Like Lizard and Turtle
  • - Easy to read : With compact design ,The Large LCD display unit is easy to read.
  • - °F / ℃ : It records a wide range of temperature (can be read in Celsius or Fahrenheit), which makes it exceptionally useful in that you can use it in any kind of fish tank.
  • ⏰ - Precise : Displaying temperature measurements within 0.1 degrees! And has a temperature range from -50 to +70 degrees celsius.
  • - Easy to set up : This thermometer comes with two parts that have suction cups that simplify the mounting process.
  • - Durable : it’s powered by one LR44 battery. These are very long lasting and easy to replace. Making this a great choice if you’re looking for an accurate and durable thermometer.
  • Manufacture: Windbells
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The Neptonion
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Neptonion Final Thoughts

"Fast accurate readings."

Put them all in the same tank and they read very close to each other. The suction will never be the same. Instead she sent a new package of two, both of which work. You can not swivle the thermometer to face a certain way. I have kept aquariums for about 45 years. Only thing I don't love is how long the cord is. I've checked it against two other thermometers that are accurate.

Overall Score
4.4


(1325 Points)

Peoples Choice - Other Highly Rated Neptonion Aquarium Thermometers

2. Neptonion Aquarium Thermometer LCD Digital Aquarium Thermometer with Suction Cup Fish Tank Water Ter...

User Ratings: 68 6

Neptonion First Impressions

"The hotter, the faster."

I used these to raise chicks, and in my parrot cages. You can use the thermometer with or without the plastic suction cup. It is large enough to see without being obtrusive. It works equally well on all of them. The display can be set to Fahrenheit or Celsius. Works well in my betta tank, but provide a couple hours for it to read temp changes. For the price I'll probably end up putting these in all of my aquariums.

  • Neptonion Aquarium Thermometer LCD Digital Aquarium Thermometer with Suction Cup Fish Tank Water Terrarium Temperature for Fish and Reptiles Like Lizard and Turtle
  • - Easy to read : With compact design ,The Large LCD display unit is easy to read.
  • - °F / ℃ : It records a wide range of temperature (can be read in Celsius or Fahrenheit), which makes it exceptionally useful in that you can use it in any kind of fish tank.
  • ⏰ - Precise : Displaying temperature measurements within 0.1 degrees! And has a temperature range from -50 to +70 degrees celsius.
  • - Easy to set up : This thermometer comes with two parts that have suction cups that simplify the mounting process.
  • - Durable : it’s powered by one LR44 battery. These are very long lasting and easy to replace. Making this a great choice if you’re looking for an accurate and durable thermometer.
  • Manufacture: Windbells
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The Neptonion
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Neptonion Final Thoughts

"Subtracted from the tank."

Who knows, whatever it was, it was revolting! Bought the two pack of thermometers. 49 thermometer that is 100% accurate. We are using them to measure various temperatures inside and outside of a motorhome. Works well in my betta tank, but provide a couple hours for it to read temp changes. Personally I do not mind the way it looks in my aquarium. I am extremely pleased with this product.

Overall Score
4.4


(386 Points)

3. Thermometer, LCD, Sticks on Outside of Aquarium Tank

User Ratings: 55 45

Carolina Biological Supply Company First Impressions

"It sticks very firmly."

I got root rot after light leaks and high water temps. Good cheap accurate aquarium thermometer. I can't say which is the most accurate and don't really care. At least in the first 3 months of use. So far I've been very thrilled with these. In the right situation this magnet thermometer is the best available. My poor fish was in 86 degrees water for a month.

  • Thermometer, LCD, Sticks on Outside of Aquarium Tank
  • A stick-on thermometer that mounts on outside of tank.
  • The Carolina Pledge: 100% Satisfaction Guaranteed. All of our products are unconditionally guaranteed. If for any reason you are not satisfied with any item, you may return it for a replacement, a refund, or credit. It's that simple.
  • From our beginnings in 1927, Carolina Biological Supply Company has grown to become a leading supplier of science teaching materials for all levels of education. Today, from our headquarters in Burlington, North Carolina, we serve customers worldwide, including teachers, professors, homeschool educators, hobbyists, and professionals in health and science-related fields.
  • When you shop with Carolina, you're not alone! All of our products are backed by unparalleled technical support, available from 8am to 8pm, ET, Monday-Friday. Contact information (Live Chat, email, and phone) is provided after placing your order at Amazon.
  • Manufacture: Carolina Biological Supply Company
  • Editor's Impressions Of The Carolina Biological Supply Company
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Carolina Biological Supply Company Final Thoughts

"Exactly what I needed."

Very accurate, have checked it with other thermometers as well. 6 inch long Bala Sharks that are known to be very unruly and boisterous. I've checked it against two other thermometers that are accurate. I needed a solution that was not breakable and these do the trick! So far I've been very thrilled with these. So the extra units will always come in handy. So this is the extreme end of the high temperature range.

Overall Score
3.2


(2 Points)

4. Petyoung 2-in-1 Digital LCD Embedded Thermometer Hygrometer Temperature Monitor with External Probe ...

User Ratings: 50

Petyoung 1330990/120337AM16UK2AQW First Impressions

"Love this product!"

I can't say which is the most accurate and don't really care. So this is the extreme end of the high temperature range. However, Lucy at Zacro read this review and emailed me. The suction will never be the same. Since it is a mercury thermometer, it is very accurate. Since it is a mercury thermometer, it is very accurate. I find that the temps are accurate, and this product gives added peace of mind.

  • Petyoung 2-in-1 Digital LCD Embedded Thermometer Hygrometer Temperature Monitor with External Probe Reptile Incubator Aquarium Poultry
  • 1. Mini thermometer hygrometer, allows you easily and fast to know the environment temperature and humidity.
  • 2. It can measure the humidity in the range of 10%-99%, and temperature from -50℃ to 70℃ precisely, offering a comfortable living surrounding for your pet or reptiles.
  • 3. Integrated the thermometer and hygrometer in one meter, convenient to use.
  • 4. LCD digital screen displays the number clearly for easy reading.
  • 5. Perfect to use in incubators, brooders, cigar room, reptile tank, aquarium, fish tank and other places where you want.
  • Manufacture: Petyoung
  • Product Dimensions: 4.72 x 2.36 x 1.18 inches; 1.41 Ounces
  • Editor's Impressions Of The Petyoung 1330990/120337AM16UK2AQW
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Petyoung 1330990/120337AM16UK2AQW Final Thoughts

"I like the product."

However, Lucy at Zacro read this review and emailed me. I bought these for my dwc reservoirs. In the right situation this magnet thermometer is the best available. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. Only thing I don't love is how long the cord is. The digital display is nice and small as well.

Overall Score
4.5


(2 Points)

5. American Thermal Horizontal Aquarium Thermometer

User Ratings: 59 4

American Thermal BC002008 First Impressions

"I immediately ordered it."

So far, they're all doing their job in my four tanks and I am quite content. Was going to get a floater until I saw this magnetic one! It works equally well on all of them. My poor fish was in 86 degrees water for a month. Very accurate, have checked it with other thermometers as well. 6 in a pack, extra batteries, easy set up, great price. The digital display is nice and small as well.

  • American Thermal Horizontal Aquarium Thermometer
  • Accurate.
  • Easy-to-read.
  • Mounts on the outside of your aquarium.
  • New movable thermometer.
  • Horizontal.
  • Manufacture: American Thermal
  • Product Dimensions: 7.4 x 1 x 0.1 inches; 0.35 Ounces
  • Editor's Impressions Of The American Thermal BC002008
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

American Thermal BC002008 Final Thoughts

"Great price."

The extra batteries where very much appreciated and came in handy. The lid is textured aluminum, and the suction cups don't stick to that. They reviewed the packaging or shipping by saying it arrived broken. Good cheap accurate aquarium thermometer. The temperature fluctuated a lot with it. The digital display itself is easy to read at a glance. Far more accurate than the usual small glass ones or external LCD strips.

Overall Score
4.2


(351 Points)

6. 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
  • Quality
  • Value For Money
  • Affordability

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


(6 Points)

7. DollaTek 2Pcs LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature - Yellow

User Ratings: 47

DollaTek First Impressions

"Just received it today."

Then she followed up again on that, asking if they had arrived and were okay. Ambient room temperature measures 72. The suction will never be the same. In this scenario it would probably get knocked loose a lot. I did have a problem with one in my first pack of 6. Ordered three of these and they do the job. This doesn't bother me as it ws so cheap.

  • DollaTek 2Pcs LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature - Yellow
  • Small volume, large function: The size of thermometer is 2.17 x 1.46 in. Our thermometer is suitable for different water types such as fresh water, tap water, salty water, marine water and etc.
  • Convenient: You can choose seither Fahrenheit or Celsius according to your need. What's more, each thermometer is equipped with a LR44 battery.
  • Show clearly temperature: You can read the temperature data clearly in the LCD screen. Please note that the thermometer reading has about 1 degree deviation.
  • Easy to use: Submerge probe into fish tank to measure water temperature (Submerge probe only, do not submerge thermometer in water).
  • Temperature range: -50 degree Celsius~ + 70 degree Celsius; Operating temperature: -10 degree Celsius~ +50 degree Celsius.
  • Item Weight: 2.11 ounces
  • Editor's Impressions Of The DollaTek
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

DollaTek Final Thoughts

"Great deal."

50 thermometers, reads much easier and no suction cup residue, also looks better. I have bought many many temperature gauges for my various fish tanks over the years. 2 deg, if it was 32, it would be a SOLID block of ice. So, in those cases, I find it easier to simply replace it. He acted aggressively towards it and so I ultimate ended up removing it due to that. This thermometer is spot on accurate. Since adding one of these, it has been much easier to monitor the temp of my tanks.

Overall Score
3.8


(10 Points)

8. Lomodo 16 Pack Floating Thermometer Aquarium Glass Temperature Gauge with Suction Cup for Fish Tank ...

User Ratings: 42 15

Lomodo First Impressions

"Works well!"

All were Close enough for a fish tank and other uses. I used these on a number of my aquariums that have discus fish in them. I don't think i'll ever be able to trust a digital thermometer again. SIX Digital Thermometers with SIX batteries INCLUDED working so well. I tested this in a cup crammed full of ice and some water. The display can be set to Fahrenheit or Celsius. I am extremely pleased with this product.

  • Lomodo 16 Pack Floating Thermometer Aquarium Glass Temperature Gauge with Suction Cup for Fish Tank (0-40℃/40-100℉)
  • You will get large quantities of 16 pack floating thermometer, enough for several aquariums
  • Made of clear glass tube and PVC suction cup, good quality and durable, packaged in blister, providing from breaking during transportation
  • Red indicator line let you read the temperature quickly and easily, temperature ranges from 0-40℃/40-100℉
  • Come with suction cup, which can suck the aquariums wall tightly
  • Widely application: you can put it in your pool, pond, fish tank, aquariums, etc
  • Manufacture: Lomodo
  • Product Dimensions: 6.3 x 2.56 x 1.02 inches; 10.62 Ounces
  • Editor's Impressions Of The Lomodo
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Lomodo Final Thoughts

"So far loving it."

Personally I do not mind the way it looks in my aquarium. Simple fix, you adjust the thermometer within the suction cup and VIOLA! 89 I could buy Six Thermometers with Six included batteries. Personally I do not mind the way it looks in my aquarium. The plastic from the suction cup quickly turned from a clear to a milky white. So far, they're all doing their job in my four tanks and I am quite content. You can use the thermometer with or without the plastic suction cup.

Overall Score
3.6


(3 Points)

9. uxcell Temperature Gauge Aquarium Thermometer with Probe for Refrigerator 2pcs

uxcell First Impressions

"Not just for aquariums!"

For the price I'll probably end up putting these in all of my aquariums. He was moving slow in the winter and we realized he needed a heater! You can not swivle the thermometer to face a certain way. Instead she sent a new package of two, both of which work. I have it in both my aquariums now. So far, they're all doing their job in my four tanks and I am quite content. I used these to raise chicks, and in my parrot cages.

  • uxcell Temperature Gauge Aquarium Thermometer with Probe for Refrigerator 2pcs
  • Temperature range: -50°C ~ +85°C (-58°F ~ +185°F)
  • Designed to 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
  • Part Number: A19010400ux0397
  • Item Weight: 2.89 ounces
  • Size: 2 Piece
  • Power Source: Battery Powered
  • Batteries Required?: No
  • Editor's Impressions Of The uxcell
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

uxcell Final Thoughts

"89 plus free shipping."

These things are useful for a lot besides pet husbandry, too. I removed the batteries of the units I wasn't using right away. He was moving slow in the winter and we realized he needed a heater! Now that the chickens are grown, I have one out in the coop as well. So far, they're all doing their job in my four tanks and I am quite content. A battery can last you up to six months, I'd say, but expect more like three. So the extra units will always come in handy.

Overall Score
3.6


(2 Points)

10. Aquatic Gardens Aquarium Hydrometer with Thermometer

User Ratings: 25 25

Aquatic Gardens First Impressions

"The hotter, the faster."

These things are useful for a lot besides pet husbandry, too. This company is taking the long term view of how to do business right. I read some of the 1 star reviews and most of them are not about the product. I guess these units do not like saltwater. Sure enough the digital thermometer was way off by 6 degrees! And for the price you cant beat it. You can not swivle the thermometer to face a certain way.

  • Aquatic Gardens Aquarium Hydrometer with Thermometer
  • Manufacture: Aquatic Gardens
  • Editor's Impressions Of The Aquatic Gardens
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Aquatic Gardens Final Thoughts

"There is no question."

I have to admit I had two reasons for buying six. The units each had a battery in place and situated for immediate use. 50 thermometers, reads much easier and no suction cup residue, also looks better. This is my first 5 star review out of many many reviews on Amazon. I did have a problem with one in my first pack of 6. The lid is textured aluminum, and the suction cups don't stick to that. The suction works for a month at a time- in pool and hot tub circulation.

Overall Score
3.2


(10 Points)

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