Editor's Choice - Our Favorite VIVOSUN Aquarium Thermometers

1. 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
  • Quality
  • Value For Money
  • Affordability

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


(1062 Points)

Peoples Choice - Other Highly Rated VIVOSUN Aquarium Thermometers

2. VIVOSUN 4-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature with Suction C...

User Ratings: 69 3

VIVOSUN First Impressions

"Appears to be accurate."

This is how you calibrate a thermometer. So much easier than the ones that hang on the inside. It is about 6 inches in length and roughly an inch wide. I used these on a number of my aquariums that have discus fish in them. In the right situation this magnet thermometer is the best available. I just wrote it off as a minor loss. Ambient room temperature measures 72.

  • VIVOSUN 4-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
  • Quality
  • Value For Money
  • Affordability

VIVOSUN Final Thoughts

"These are great!"

50 thermometers, reads much easier and no suction cup residue, also looks better. The digital display itself is easy to read at a glance. So far I've been very thrilled with these. They reviewed the packaging or shipping by saying it arrived broken. It is about 6 inches in length and roughly an inch wide. The suction cups work well anywhere I have placed it it has not Fallen. I'm pretty sure those reviewers have acrylic tanks.

Overall Score
4.5


(627 Points)

3. VIVOSUN 2-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature with Suction C...

User Ratings: 71 3

VIVOSUN First Impressions

"Fast accurate readings."

Excellent working for our bearded dragon tank. It is my opinion that everyone should have these that are in the Aquarium Hobby. I ordered a new one and it works GREAT! The non-working ones still provide 2 batteries each AND. Water tested with Autidefy brand for two hours. The lid is textured aluminum, and the suction cups don't stick to that. This doesn't bother me as it ws so cheap.

  • VIVOSUN 2-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 39.37 inch (1 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
  • Quality
  • Value For Money
  • Affordability

VIVOSUN Final Thoughts

"There is no question."

Love it, it's easy to read and keeps an accurate temp. And I just really started to doubt it. 6 inch long Bala Sharks that are known to be very unruly and boisterous. Then is started to give a low reading, and it is not reading the correct temperature. Far more accurate than the usual small glass ones or external LCD strips. It's kind of difficult to hide and keep out of the way. I came here to give this product a positive review.

Overall Score
4.5


(512 Points)

4. Penn-Plax Standing Thermometer

User Ratings: 49

Penn-Plax TS First Impressions

"Which is good."

So the extra units will always come in handy. The suction works for a month at a time- in pool and hot tub circulation. Now if it falls into a sink full of water, it's not a problem. It is large enough to see without being obtrusive. Place it on your aquarium and you are good to go. And I just really started to doubt it. I had my heater set at 73-degrees and the thermometers showed 74.

  • Penn-Plax Standing Thermometer
  • Standing Style Glass Aquarium Thermometer
  • Accurate Easy To Read
  • This Product Is Made In China
  • Package Dimensions: 0.6" L X 3.1" W X 7.4" H
  • Manufacture: Penn Plax, INC.
  • Product Dimensions: 0.6 x 3.1 x 7.4 inches; 0.8 Ounces
  • Editor's Impressions Of The Penn-Plax TS
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Penn-Plax TS Final Thoughts

"Close enough I reckon!"

I recommend gluing the suction cups in place where needed for long-term installation. A bit large for anything smaller than 5 gallons, but that's to be expected. I use a small flashlight if I don't want to brighten the area. My poor fish was in 86 degrees water for a month. The only reason I didn't give this 5 stars is because my betta fish didn't like it. So this is the extreme end of the high temperature range. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK.

Overall Score
4.3


(13 Points)

5. capetsma Mini Hygrometer Reptile Thermometer Digital LCD Monitor Reptile Thermostat Humidity Meter ...

User Ratings: 50

capetsma First Impressions

"No issues."

I think the people who said the suction cup broke. The digital display itself is easy to read at a glance. Since it is a mercury thermometer, it is very accurate. I can't say which is the most accurate and don't really care. 2 deg, if it was 32, it would be a SOLID block of ice. Still a recommendation for me due to price and accuracy. Place it on your aquarium and you are good to go.

  • capetsma Mini Hygrometer Reptile Thermometer Digital LCD Monitor Reptile Thermostat Humidity Meter Gauge Reptile Supplies Humidifier for Terrarium Greenhouse Basement Babyroom - F/C - Sound Alarm
  • Wide Application: This hygrometer thermometer is suitable for various occasions like reptile supplies, or you can use it in your car home, kindergartens , schools and places equipped with air conditioners, etc.
  • Easy to use: capetsma digital reptile thermometer shows the temperature and humidity on clear LCD screen, accurate and easy to read, 24/7 monitoring helps you make sure your reptiles are in perfect condition. Just take a glance as you passed by or feeding, read or do some adjustment if needed.
  • Accurate Display: With an accurate temperature sensor inside, these hygrometer reptile supplies will measure every 10 seconds and display reading from 0C to 70C / 32F -158F, with a temperature mistake range +- 1C / +- 2F. Measures humidity from 10% to 90%, mistake range +/-5%.
  • Easy to install and remove with hook and velcro: No messy wires in tank, rustproof and durable, Just stick on the inside of the acrylic or glass terrarium, this reptile accessories humidity gauge will stay on steadily, not like thermometers with suction cup, it will not fall off and frighten your pal.
  • 12 month warranty: We are dedicated to ensuring your 100% satisfaction and we offer 12 month warranty. if you have any problem, just contact us and we will reply you within 24 hrs.
  • Manufacture: capetsma
  • Product Dimensions: 1.97 x 1.18 x 0.47 inches; 1.06 Ounces
  • Batteries: 1 CR2 batteries required. (included)
  • Editor's Impressions Of The capetsma
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

capetsma Final Thoughts

"Great product!"

I guess these units do not like saltwater. As you can see from my photos, in both°F and°C, all six are within. So versatile, I can read the temperatures literally anywhere. This thermometer is spot on accurate. 2 deg, if it was 32, it would be a SOLID block of ice. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. 50 thermometers, reads much easier and no suction cup residue, also looks better.

Overall Score
4.5


(2 Points)

6. SUKRAGRAHA Traditional Stick-on Aquarium Thermometers Temperature Strip Degree Fahrenheit Celsius Di...

User Ratings: 64 8

SUKRAGRAHA First Impressions

"Exactly what I needed."

I have always had trouble reading the color temp. 6F all six took about three minutes to read between 88. Personally I do not mind the way it looks in my aquarium. I got root rot after light leaks and high water temps. Who knows, whatever it was, it was revolting! I find that the temps are accurate, and this product gives added peace of mind. You dont HAVE to stick the display onto your tank.

  • SUKRAGRAHA Traditional Stick-on Aquarium Thermometers Temperature Strip Degree Fahrenheit Celsius Display 10 pc (64~93F Not for Fever)
  • 10 pcs Set
  • Dimensions: 5.12 x 0.71 inch / 13.0 x 1.8 cm
  • Measuring range: 64~93 Degree F (18~34 Degree C)
  • 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
  • Quality
  • Value For Money
  • Affordability

SUKRAGRAHA Final Thoughts

"I opened the first three."

You can glue, tape or simply cover the cords in the tank to keep them discreet. Only thing I don't love is how long the cord is. I did have a problem with one in my first pack of 6. I bent it a little bit and when I put it back it was perfectly fine. These digital thermometers are great and there is no guesswork involved. The only reason I didn't give this 5 stars is because my betta fish didn't like it. So the extra units will always come in handy.

Overall Score
4.3


(1078 Points)

7. 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)

8. 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)

9. 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)

10. Wansan LCD Digital Aquarium Thermometer for Fish Tank Water Terrarium Temperature (Pack of 1,Black)

Wansan First Impressions

"1 degree of each other."

It is about 6 inches in length and roughly an inch wide. We are using them to measure various temperatures inside and outside of a motorhome. So this is the extreme end of the high temperature range. The suction will never be the same. I tested this in a cup crammed full of ice and some water. These digital thermometers are great and there is no guesswork involved. We are using them to measure various temperatures inside and outside of a motorhome.

  • Wansan LCD Digital Aquarium Thermometer for Fish Tank Water Terrarium Temperature (Pack of 1,Black)
  • Our Thermometer is made of durable plastic and clear, big LCD screen, lightweight and easy to read.
  • Package including:1 x Aquarium Thermometer
  • Submerge probe into fish tank to measure water temperature (Submerge probe only, do not submerge thermometer in water).
  • Easy to install.
  • Compact design for discrete use
  • Manufacture: Wansan
  • Product Dimensions: 0.39 x 0.39 x 0.39 inches; 1.06 Ounces
  • Editor's Impressions Of The Wansan
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Wansan Final Thoughts

"Buy these."

The plastic from the suction cup quickly turned from a clear to a milky white. We are using them to measure various temperatures inside and outside of a motorhome. I think the people who said the suction cup broke. This company is taking the long term view of how to do business right. This thermometer is spot on accurate. I used to have a large hang in the side tank that you couldn't miss. We are using them to measure various temperatures inside and outside of a motorhome.

Overall Score
5.0


(1 Points)

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