Editor's Choice - Our Favorite Coralife Aquarium Thermometers

1. Coralife 00232 Digital Thermometer

User Ratings: 50 10

Coralife 100105032 First Impressions

"Great price."

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. The non-working ones still provide 2 batteries each AND. I used these on a number of my aquariums that have discus fish in them. I've checked it against two other thermometers that are accurate. Excellent working for our bearded dragon tank. If the digital display starts to get dim, it's time for a new battery.

  • Coralife 00232 Digital Thermometer
  • Attaches to aquarium via small suction cup
  • 3 foot long temperature probe for large size aquariums
  • Battery included
  • Ideal for aquariums and terrariums
  • Readings to 0.1-degrees Fahrenheit or Celsius
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 6.3 x 0.4 x 1.9 inches; 1.6 Ounces
  • Editor's Impressions Of The Coralife 100105032
  • Thermometer Accuracy [star rating='4']
  • Quality [star rating='3.6']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='4.7']

Coralife 100105032 Final Thoughts

"I like these."

I removed the batteries of the units I wasn't using right away. Bought the two pack of thermometers. Good cheap accurate aquarium thermometer. The plastic from the suction cup quickly turned from a clear to a milky white. It is always where yo last put it and it is very easy to see and read. The non-working ones still provide 2 batteries each AND. All are pretty accurate within one degree as claimed.

Overall Score
3.8

[star rating="3.8"]
(230 Points)

2. LANDUM Digital Aquarium Tank Fish Thermometer Temperature Sticker Dual Scale 1 Piece

LANDUM First Impressions

"Drop in the probe."

2 deg, if it was 32, it would be a SOLID block of ice. Excellent working for our bearded dragon tank. 82 PER THERMOMETER with battery included. I got root rot after light leaks and high water temps. The only reason I didn't give this 5 stars is because my betta fish didn't like it. A battery can last you up to six months, I'd say, but expect more like three. The lid is textured aluminum, and the suction cups don't stick to that.

  • LANDUM Digital Aquarium Tank Fish Thermometer Temperature Sticker Dual Scale 1 Piece
  • Application: Measure the temperature of your fish tank, your DIY Brew Beer and wine barrel, Terrarium, Greenhouse, Vivarium and any sort of pet tank, or any place in your house
  • Quality Workmanship: Made of high quality PET material, non toxic, safe and durable
  • Advantage: The right water temperature is very important for the health of your fish, get your beer and wine right or use in kitchen or around the home to monitor temperature
  • Special Design: 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.
  • Package Include: 1Piece x Aquarium Fish Tank Thermometer
  • Manufacture: LANDUM
  • Editor's Impressions Of The LANDUM
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.8']

LANDUM Final Thoughts

"Would buy again."

I have it in both my aquariums now. At least in the first 3 months of use. The display can be set to Fahrenheit or Celsius. I use a small flashlight if I don't want to brighten the area. I used these on a number of my aquariums that have discus fish in them. It is my opinion that everyone should have these that are in the Aquarium Hobby. The suction cups work well anywhere I have placed it it has not Fallen.

Overall Score
5.0

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

3. Deep Blue Professional ADB12304 High Performance Digital LCD Stick-On for Aquarium

User Ratings: 47 21

Deep Blue Professional 894086 First Impressions

"Very accurate."

The extra batteries where very much appreciated and came in handy. I needed a solution that was not breakable and these do the trick! It is my opinion that everyone should have these that are in the Aquarium Hobby. 6F all six took about three minutes to read between 88. Personally I do not mind the way it looks in my aquarium. I came here to give this product a positive review. It is my opinion that everyone should have these that are in the Aquarium Hobby.

  • Deep Blue Professional ADB12304 High Performance Digital LCD Stick-On for Aquarium
  • Deep blue Hip Digital Led (Stick-On) from Deep Blue Professional, Thermometer & Hydrometer category with model ADB12304
  • Deep blue Hip Digital Led (Stick-On) used for Pets
  • Made in USA
  • Package Dimension: 12.7cm x 2.54cm x 0.25cm
  • Manufacture: TopDawg Pet Supply
  • Product Dimensions: 1 x 1 x 1 inches; 0.35 Ounces
  • Editor's Impressions Of The Deep Blue Professional 894086
  • Thermometer Accuracy [star rating='4.3']
  • Quality [star rating='3.9']
  • Value For Money [star rating='2.8']
  • Affordability [star rating='2.8']

Deep Blue Professional 894086 Final Thoughts

"Just received it today."

Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. These digital thermometers are great and there is no guesswork involved. I ordered a new one and it works GREAT! I had my heater set at 73-degrees and the thermometers showed 74. I had my heater set at 73-degrees and the thermometers showed 74. The suction works for a month at a time- in pool and hot tub circulation. You can not swivle the thermometer to face a certain way.

Overall Score
3.5

[star rating="3.5"]
(7 Points)

4. Vipe Digital LCD Aquarium Thermometer Fish Tank Water Terrarium Temperature

User Ratings: 52 15

Vipe First Impressions

"Super easy."

The digital display is nice and small as well. I got the second one as a bonus that I'm now using in my old tank. I am extremely pleased with this product. I don't think i'll ever be able to trust a digital thermometer again. Good cheap accurate aquarium thermometer. This doesn't bother me as it ws so cheap. I'm pretty sure those reviewers have acrylic tanks.

  • Vipe Digital LCD Aquarium Thermometer Fish Tank Water Terrarium Temperature
  • Large accurate temperature readings with this Mini Digital Thermometer that has a simple appearance, discreet design and an easy to read LCD display.
  • Made of sturdy plastic material, ideal for use in refrigerators, refrigerators and freezers, the thermometer has a range of -50 degrees to +70 degrees.
  • Size of the Freezer Digital Thermometer Refrigerator makes it ideal for any situation where you need an accurate reading and easy-to-read screen displays the ambient temperature in Celsius.
  • Thermometer Refrigerator Digital Thermometer features ultra small and lightweight unit.
  • Powered by two button batteries, LCD Digital Thermometer can be used for a long time.
  • Manufacture: Vipe
  • Editor's Impressions Of The Vipe
  • Thermometer Accuracy [star rating='2.8']
  • Quality [star rating='3.7']
  • Value For Money [star rating='3.2']
  • Affordability [star rating='4.8']

Vipe Final Thoughts

"It is within."

This is my first 5 star review out of many many reviews on Amazon. Then she followed up again on that, asking if they had arrived and were okay. I got root rot after light leaks and high water temps. The only reason I didn't give this 5 stars is because my betta fish didn't like it. He was moving slow in the winter and we realized he needed a heater! All are pretty accurate within one degree as claimed. I did have a problem with one in my first pack of 6.

Overall Score
3.8

[star rating="3.8"]
(26 Points)

5. MECO(TM) Aquarium Fish Tank Suction Glass Temperature Thermometer

User Ratings: 66

GOZIER First Impressions

"Suction cups fail."

I am extremely pleased with this product. I have bought many many temperature gauges for my various fish tanks over the years. I was using one of those ubiquitous cheap digital thermometers on Amazon. 6F all six took about three minutes to read between 88. Simple fix, you adjust the thermometer within the suction cup and VIOLA! When and if we run out of this batch, I'll instantly order another batch. I had my heater set at 73-degrees and the thermometers showed 74.

  • MECO(TM) Aquarium Fish Tank Suction Glass Temperature Thermometer
  • Is a long version that easily attaches to your tank with the suction cap provided.
  • Just drop it in the tank and attached the suction cup to the inside of the tank for easy and accurate reading.
  • Clear and easy to read scale. Clear tells you what the temperature is in both Celsius and Fahrenheit degrees.
  • Permanently sealed glass of the floating thermometer with suction cup for your fish tank and aquarium is easy to clean.
  • Being that this thermometer is inside the tank, it gives a much accurate reading of the water temperature than those placed on the outside.
  • Editor's Impressions Of The GOZIER
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.3']

GOZIER Final Thoughts

"2 deg of 32."

I'm pretty sure those reviewers have acrylic tanks. I recommend gluing the suction cups in place where needed for long-term installation. Have checked them against the glass thermometers and the accuracy is right on. I removed the batteries of the units I wasn't using right away. These digital thermometers are great and there is no guesswork involved. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. It worked great and I highly recommend it!

Overall Score
4.7

[star rating="4.7"]
(4 Points)

6. 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 [star rating='4.5']
  • Quality [star rating='3.6']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='4.7']

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

[star rating="3.8"]
(25 Points)

7. American Thermal Liquid Crystal Aquarium Thermometer Vertical Small

User Ratings: 72 7

Amer Thermal Instruments BC002021 First Impressions

"Perhaps it's my fault."

I have to admit I had two reasons for buying six. It is always where yo last put it and it is very easy to see and read. The units each had a battery in place and situated for immediate use. These things are useful for a lot besides pet husbandry, too. This thermometer is spot on accurate. The units each had a battery in place and situated for immediate use. 6 in a pack, extra batteries, easy set up, great price.

  • American Thermal Liquid Crystal Aquarium Thermometer Vertical Small
  • Know your aquarium's temperature at a glance
  • Easy-to-read and accurate thermometer mounts on outside of your aquarium
  • Unbreakable, non-corrosive, and non-toxic
  • Fahrenheit scale
  • Manufacture: Amer Thermal Instruments
  • Editor's Impressions Of The Amer Thermal Instruments BC002021
  • Thermometer Accuracy [star rating='4.3']
  • Quality [star rating='3.7']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='3.5']

Amer Thermal Instruments BC002021 Final Thoughts

"Which is good."

You can glue, tape or simply cover the cords in the tank to keep them discreet. The suction cups work well anywhere I have placed it it has not Fallen. Simple fix, you adjust the thermometer within the suction cup and VIOLA! The digital display itself is easy to read at a glance. I can't say which is the most accurate and don't really care. In the right situation this magnet thermometer is the best available. So versatile, I can read the temperatures literally anywhere.

Overall Score
4.4

[star rating="4.4"]
(384 Points)

8. 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 [star rating='4.9']
  • Quality [star rating='4.2']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='3.3']

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

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

9. Zoo Med Digital Terrarium Thermometer, 3 x 2 x 1"

User Ratings: 72 4

Zoo Med TH24 First Impressions

"A solid five stars."

So versatile, I can read the temperatures literally anywhere. At least in the first 3 months of use. You can not swivle the thermometer to face a certain way. I have this thermometer on all my tanks. For something so cheap, they are working remarkably well. This is my first 5 star review out of many many reviews on Amazon. I recommend gluing the suction cups in place where needed for long-term installation.

  • Zoo Med Digital Terrarium Thermometer, 3 x 2 x 1"
  • External sensor can go in water
  • Fahrenheit and Celsius
  • LCD readout
  • Using suction cups, mount the probe inside the enclosure (wet or dry). Mount the digital display in a dry location outside the enclosure.
  • Press power (pwr) button to turn on. Press and hold power button for 5 seconds to turn off.
  • Slide fahrenheit/celsius switch to desired setting.
  • Uses one LR44, 1.5 v battery (included).
  • Manufacture: Zoo Med Laboratories
  • Item Weight: 1.06 ounces
  • Product Dimensions: 6 x 4 x 2 inches
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The Zoo Med TH24
  • Thermometer Accuracy [star rating='4.6']
  • Quality [star rating='4.3']
  • Value For Money [star rating='4']
  • Affordability [star rating='5']

Zoo Med TH24 Final Thoughts

"I placed it on the side."

I find that the temps are accurate, and this product gives added peace of mind. So much so that I purchased a second set of 6. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. This thermometer is spot on accurate. Very accurate, have checked it with other thermometers as well. So this is the extreme end of the high temperature range. When I set up my newest tank I will be getting another one of these.

Overall Score
4.5

[star rating="4.5"]
(1749 Points)

10. Water & Wood Aquarium Fish Tank Suction Glass Temperature Thermometer

Waterwood First Impressions

"Appears to be accurate."

I removed the batteries of the units I wasn't using right away. Instead she sent a new package of two, both of which work. They reviewed the packaging or shipping by saying it arrived broken. A battery can last you up to six months, I'd say, but expect more like three. As you can see from my photos, in both°F and°C, all six are within. I don't think i'll ever be able to trust a digital thermometer again. Instead she sent a new package of two, both of which work.

  • Water & Wood Aquarium Fish Tank Suction Glass Temperature Thermometer
  • Aquarium Fish Tank Suction Glass Temperature Thermometer
  • New item with high quality
  • Manufacture: Water & Wood
  • Editor's Impressions Of The Waterwood
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='5']

Waterwood Final Thoughts

"The hotter, the faster."

They reviewed the packaging or shipping by saying it arrived broken. I have to admit I had two reasons for buying six. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. I'm pretty sure those reviewers have acrylic tanks. This thermometer is spot on accurate. You can use the thermometer with or without the plastic suction cup. The non-working ones still provide 2 batteries each AND.

Overall Score
5.0

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

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