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. Amer Thermal Instruments Liquid Crystal Vertical Aquarium Thermometer, Small

User Ratings: 73 7

Amer Thermal Instruments BC002021 First Impressions

"Holds a steady 1."

Then is started to give a low reading, and it is not reading the correct temperature. The digital display itself is easy to read at a glance. 6 in a pack, extra batteries, easy set up, great price. I've checked it against two other thermometers that are accurate. One of my aquariums is glass, and the other two are plastic. Place it on your aquarium and you are good to go. My poor fish was in 86 degrees water for a month.

  • Amer Thermal Instruments Liquid Crystal Vertical Aquarium Thermometer, Small
  • Liquid Crystal Vertical Aquarium Thermometer. Miscellaneous Aquarium
  • Manufacturer: AMERICAN THERMAL
  • Manufacturer part number: A-1003
  • Manufacture: Unique Cell Distributors LLC
  • Product Dimensions: 4 x 0.5 x 7 inches; 0.08 Ounces
  • Editor's Impressions Of The Amer Thermal Instruments BC002021
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Amer Thermal Instruments BC002021 Final Thoughts

"Overall a great buy."

And is easily hidden behind a plant. I came here to give this product a positive review. At least in the first 3 months of use. Excellent working for our bearded dragon tank. The digital display itself is easy to read at a glance. Simple fix, you adjust the thermometer within the suction cup and VIOLA! So much so that I purchased a second set of 6.

Overall Score
4.4


(69 Points)

5. Marina Deluxe Floating Thermometer with Suction Cup

User Ratings: 69 7

Marina 11204 First Impressions

"THERE'S MORE!"

Was going to get a floater until I saw this magnetic one! 82 PER THERMOMETER with battery included. If the digital display starts to get dim, it's time for a new battery. And is easily hidden behind a plant. So far, they're all doing their job in my four tanks and I am quite content. I tested this in a cup crammed full of ice and some water. Sure enough the digital thermometer was way off by 6 degrees!

  • Marina Deluxe Floating Thermometer with Suction Cup
  • Easy-to-read floating thermometer
  • Includes a safety zone indicator
  • Equipped with suction cups
  • Ensures your aquarium is at a proper temperature
  • Temperature range of 30 to 120 degrees Fahrenheit
  • Manufacture: Marina
  • Product Dimensions: 0.5 x 3.8 x 4.3 inches; 0.18 Ounces
  • Editor's Impressions Of The Marina 11204
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11204 Final Thoughts

"The hotter, the faster."

I've checked it against two other thermometers that are accurate. Love it, it's easy to read and keeps an accurate temp. A bit large for anything smaller than 5 gallons, but that's to be expected. A battery can last you up to six months, I'd say, but expect more like three. I have to admit I had two reasons for buying six. However, Lucy at Zacro read this review and emailed me. A battery can last you up to six months, I'd say, but expect more like three.

Overall Score
4.4


(649 Points)

6. Landen Hang On Thermometer

User Ratings: 64 12

Landen G-6C First Impressions

"Changed to 5-stars now."

Personally I do not mind the way it looks in my aquarium. 6F all six took about three minutes to read between 88. The temperature fluctuated a lot with it. This doesn't bother me as it ws so cheap. These things are useful for a lot besides pet husbandry, too. I ordered this guy and it was 6 degrees hotter than the digital! This company is taking the long term view of how to do business right.

  • Landen Hang On Thermometer
  • 【Minimalist Design】Elegant slender body, crystal clear glass-made. No disturbing on the beautiful scene of your nature aquarium
  • 【Easy Usage】Simply place it directly along a wall of your aquarium Tank, easy to read on the clear lines against the conventional gauges
  • 【Attractive Appearance】Perfectly fit into your aquarium, good for light transparency, easy to clean and long-lasting
  • 【All Water Typer】Fit for all water type, freshwater or saltwater, no worry on battery or body wear and tear
  • 【Sepcification】Actual Length: 6.4 inches, for 6mm or thinner thickness of aquarium tank; Clear scale background; Measuring temperature: 0-40 Celsius degree
  • Manufacture: Landen
  • Editor's Impressions Of The Landen G-6C
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Landen G-6C Final Thoughts

"Versatile."

In the right situation this magnet thermometer is the best available. I can't say which is the most accurate and don't really care. It worked great and I highly recommend it! Since adding one of these, it has been much easier to monitor the temp of my tanks. He was moving slow in the winter and we realized he needed a heater! These digital thermometers are great and there is no guesswork involved. And for the price you cant beat it.

Overall Score
4.2


(48 Points)

7. 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)

8. Lomodo 4 Pack Floating Thermometer Aquarium Glass Temperature Gauge with Suction Cup for Fish Tank

User Ratings: 63 12

Lomodo First Impressions

"Works perfect."

I got the second one as a bonus that I'm now using in my old tank. 2 deg, if it was 32, it would be a SOLID block of ice. Bought the two pack of thermometers. Good cheap accurate aquarium thermometer. At least in the first 3 months of use. Set all six probes up in a terrarium with a constant temp of 88. I have kept aquariums for about 45 years.

  • Lomodo 4 Pack Floating Thermometer Aquarium Glass Temperature Gauge with Suction Cup for Fish Tank
  • Ideal for fish tank, aquariums, suitable for indoor and outdoor use, ensuring proper water temperature
  • The red indicator allows you to easily read the temperature
  • Green safety zone quickly indicates whether the water temperature is normal
  • Equipped with suction cups, it can either float on water or suck on glass walls
  • Easy to use: just put it in your pool, pond, fish tank, etc. and it will get you the water temperature
  • Manufacture: Lomodo
  • Editor's Impressions Of The Lomodo
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Lomodo Final Thoughts

"Very accurate."

Checked with temp gun and the terrarium was on target at 88. It will make you wonder why nobody thought of it before. The units each had a battery in place and situated for immediate use. Good cheap accurate aquarium thermometer. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. He acted aggressively towards it and so I ultimate ended up removing it due to that. This temperature read a perfect 32 degrees.

Overall Score
4.0


(61 Points)

9. Towashine Fish Tank Thermometer U Shape Hanging on Temperature Monitor Gauge for 6mm Thick Glass Aqu...

Towashine First Impressions

"And he is a betta."

89 I could buy Six Thermometers with Six included batteries. 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. This doesn't bother me as it ws so cheap. Place it on your aquarium and you are good to go. This thermometer is spot on accurate. When and if we run out of this batch, I'll instantly order another batch.

  • Towashine Fish Tank Thermometer U Shape Hanging on Temperature Monitor Gauge for 6mm Thick Glass Aquarium
  • U shape design is convenient to use and you can hang it on fish tank, no need suction cup
  • Fit for 6mm thickness glass fish tank, 5.9" in length
  • Temperature range from 0℃ to 40℃
  • Made of high quality glass and easy to read accurate numbers
  • Great for fresh water and salt water
  • Manufacture: Towashine
  • Product Dimensions: 5.91 x 0.02 x 0.02 inches; 1.23 Ounces
  • Editor's Impressions Of The Towashine
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Towashine Final Thoughts

"Great price too."

I have it in both my aquariums now. This company is taking the long term view of how to do business right. I can't say which is the most accurate and don't really care. I read some of the 1 star reviews and most of them are not about the product. We are using them to measure various temperatures inside and outside of a motorhome. I have to admit I had two reasons for buying six. The non-working ones still provide 2 batteries each AND.

Overall Score
3.6


(2 Points)

10. Marina Stainless Steel Thermometer

User Ratings: 51 11

Marina 11203A1 First Impressions

"6 tenths of a degree."

82 PER THERMOMETER with battery included. I have kept aquariums for about 45 years. And for the price you cant beat it. You can not swivle the thermometer to face a certain way. Have checked them against the glass thermometers and the accuracy is right on. I needed a solution that was not breakable and these do the trick! Was going to get a floater until I saw this magnetic one!

  • Marina Stainless Steel Thermometer
  • Easy-to-read stainless steel thermometer
  • Includes a safety zone indicator. Safety zone Indicator for Most Tropical fish
  • Ensures your aquarium is at a proper temperature. Protects your Fish from Unsafe Temperature
  • Hooks onto the side of your aquarium
  • 4.5 inches tall
  • Manufacture: Marina
  • Product Dimensions: 0.9 x 3.9 x 7 inches; 0.64 Ounces
  • Editor's Impressions Of The Marina 11203A1
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11203A1 Final Thoughts

"Currently maintains a 76."

All were Close enough for a fish tank and other uses. The lid is textured aluminum, and the suction cups don't stick to that. The suction cups work well anywhere I have placed it it has not Fallen. It works equally well on all of them. Still a recommendation for me due to price and accuracy. So the extra units will always come in handy. My only complaint is that they tend to be a one time use.

Overall Score
4.0


(251 Points)

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