Editor's Choice - Our Favorite Unknown Aquarium Thermometers

1. LCD Digital Fish Tank Temperature Control Sensor Thermometer Wired Aquarium Fish Tank

Unknown First Impressions

"2 deg of 32."

This company is taking the long term view of how to do business right. 2 deg, if it was 32, it would be a SOLID block of ice. I used these to raise chicks, and in my parrot cages. I have mine on my 60 gallon cube marine tank. I have kept aquariums for about 45 years. So versatile, I can read the temperatures literally anywhere. Still a recommendation for me due to price and accuracy.

  • LCD Digital Fish Tank Temperature Control Sensor Thermometer Wired Aquarium Fish Tank
  • Manufacture: Unknown
  • Editor's Impressions Of The Unknown
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Unknown Final Thoughts

"A solid five stars."

I have this thermometer on all my tanks. So versatile, I can read the temperatures literally anywhere. Simple fix, you adjust the thermometer within the suction cup and VIOLA! At least in the first 3 months of use. For something so cheap, they are working remarkably well. In this scenario it would probably get knocked loose a lot. Still a recommendation for me due to price and accuracy.

Overall Score
4.0


(1 Points)

2. AQUANEAT 1 Pack Aquarium Thermometer, Reptile Thermometer, Fish Tank Thermometer, Digital Thermomete...

User Ratings: 70 4

AQUANEAT DT-A045^ First Impressions

"So far loving it."

My 50+ eyes cannot read a regular tank thermometer without squinting. Only thing I don't love is how long the cord is. These are the perfect size to be easily read while not being obtrusive. SIX Digital Thermometers with SIX batteries INCLUDED working so well. This doesn't bother me as it ws so cheap. Since it is a mercury thermometer, it is very accurate. I can't say which is the most accurate and don't really care.

  • AQUANEAT 1 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-A045^
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

AQUANEAT DT-A045^ Final Thoughts

"So far so good."

So far, they're all doing their job in my four tanks and I am quite content. The digital display itself is easy to read at a glance. Place it on your aquarium and you are good to go. I have mine on my 60 gallon cube marine tank. Simple fix, you adjust the thermometer within the suction cup and VIOLA! Personally I do not mind the way it looks in my aquarium. Place it on your aquarium and you are good to go.

Overall Score
4.5


(507 Points)

3. Wffo Digital LCD Fish Aquarium Marine Vivarium Thermometer -50°C to 70°C (Black)

User Ratings: 58 42

Wffo First Impressions

"Holds a steady 1."

I had my heater set at 73-degrees and the thermometers showed 74. This is how you calibrate a thermometer. The digital display is nice and small as well. I have mine on my 60 gallon cube marine tank. He acted aggressively towards it and so I ultimate ended up removing it due to that. I don't think i'll ever be able to trust a digital thermometer again. When and if we run out of this batch, I'll instantly order another batch.

  • Wffo Digital LCD Fish Aquarium Marine Vivarium Thermometer -50°C to 70°C (Black)
  • ❤Application: Aquarium, Indoor, Refrigerator, Human Body, Car, CPU Heat Diffuser
  • ❤Package Content: 1X WMA Digital LCD Fish Aquarium Marine Vivarium Thermometer -50°C to 70°C
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  • Manufacture: Wffo
  • Editor's Impressions Of The Wffo
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Wffo Final Thoughts

"Perfect customer service."

Who knows, whatever it was, it was revolting! These are the perfect size to be easily read while not being obtrusive. 2 deg, if it was 32, it would be a SOLID block of ice. I have this thermometer on all my tanks. My 50+ eyes cannot read a regular tank thermometer without squinting. Water tested with Autidefy brand for two hours. It's kind of difficult to hide and keep out of the way.

Overall Score
3.3


(3 Points)

4. 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)

5. LCR Hallcrest A-1007 Liquid Crystal Horizontal Aquarium Thermometer

LCR Hallcrest A-1007 First Impressions

"Would recommend!"

I think the people who said the suction cup broke. It is large enough to see without being obtrusive. I bought these for my dwc reservoirs. I have this thermometer on all my tanks. This little wonder allows me to see at a glance that everything is as it should be. As you can see from my photos, in both°F and°C, all six are within. SIX Digital Thermometers with SIX batteries INCLUDED working so well.

  • LCR Hallcrest A-1007 Liquid Crystal Horizontal Aquarium Thermometer
  • Easy To Read
  • Mounts Vertically On The Outside Of Your Aquarium
  • Easily Movable
  • Manufacture: Unique Cell Distributors LLC
  • Product Dimensions: 4 x 0.5 x 7 inches; 0.35 Ounces
  • Editor's Impressions Of The LCR Hallcrest A-1007
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

LCR Hallcrest A-1007 Final Thoughts

"And I am glad I did."

Have checked them against the glass thermometers and the accuracy is right on. Sure enough the digital thermometer was way off by 6 degrees! The temperature fluctuated a lot with it. I came here to give this product a positive review. I can't say which is the most accurate and don't really care. He acted aggressively towards it and so I ultimate ended up removing it due to that. The display can be set to Fahrenheit or Celsius.

Overall Score
5.0


(12 Points)

6. Non-Contact Infrared Thermometer, ELVASEN Digital Laser Temperature Gun Forehead Infrared Thermomete...

User Ratings: 38 27

ELVASEN First Impressions

"Great product!"

82 PER THERMOMETER with battery included. In this scenario it would probably get knocked loose a lot. I find that the temps are accurate, and this product gives added peace of mind. Very impressed, I have now had them in used for a month so far. And is easily hidden behind a plant. I have this thermometer on all my tanks. Excellent working for our bearded dragon tank.

  • Non-Contact Infrared Thermometer, ELVASEN Digital Laser Temperature Gun Forehead Infrared Thermometer for Baby, Adult, Child, Surface of Objects
  • Measurement accuracy: Body Temperature -- outside (35-42) ℃ ± 0.3 ℃ / 0.54 ℉ / (35-42) ℃ ± 0.2 ℃ / 0.4 ℉; Object Temperature: ± 1.0 ℃ / 1.8 ℉.(Not include battery)
  • Measurement range: Body Temperature -- 32 ℃ to 42.9 ℃ (89.6 ℉ to 109.2 ℉); Object Temperature -- 0 ℃ to 100 ℃ (32 ℉ to 212 ℉)
  • Product Introduction: This product is composed of high-precision infrared sensor, microprocessor, memory chip, power supply, electro-acoustic component, liquid crystal display and housing. It can quickly and accurately measure human body temperature or object temperature.
  • Usage rules -- Human Body Measurement: While waiting, point the thermometer probe at the center of the forehead (above the eyebrow center) and keep it vertical, distance 3 ~ 5cm, press the measurement key to display the measured temperature within about 0.5 seconds; While waiting, press the "-" button once to switch to the temperature measurement mode. Point the thermometer probe at the object and press the measurement button. The measurement temperature will be displayed in about 1 seconds.
  • Working Principle: This product adopts infrared temperature sensing method to measure temperature display or data output. It displays the temperature of the measured object by measuring the thermal radiation of the forehead or object.
  • Manufacture: ELVASEN
  • Editor's Impressions Of The ELVASEN
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

ELVASEN Final Thoughts

"So far loving it."

Personally I do not mind the way it looks in my aquarium. For something so cheap, they are working remarkably well. My only complaint is that they tend to be a one time use. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. So much easier than the ones that hang on the inside. Who knows, whatever it was, it was revolting! I can't say which is the most accurate and don't really care.

Overall Score
3.4


(48 Points)

7. Zoo Med Laboratories SZMHC10 Hermit Crab Thermometer

User Ratings: 84 8

Zoo Med 976001 First Impressions

"And he is a betta."

Then is started to give a low reading, and it is not reading the correct temperature. I removed the batteries of the units I wasn't using right away. 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. 49 thermometer that is 100% accurate. One extra battery came with each unit. You dont HAVE to stick the display onto your tank.

  • Zoo Med Laboratories SZMHC10 Hermit Crab Thermometer
  • Zoo Med Laboratories Hermit Crab Thermometer
  • High range LCD thermometer for monitoring the temperature in your crabs terrarium
  • Allows precise monitoring of both temperature and humidity in your hermit crabs home
  • Manufacture: TopDawg Pet Supply
  • Product Dimensions: 0.02 x 0.02 x 0.02 inches; 0.32 Ounces
  • Editor's Impressions Of The Zoo Med 976001
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Zoo Med 976001 Final Thoughts

"It's accurate I tell you."

I use a small flashlight if I don't want to brighten the area. I use a small flashlight if I don't want to brighten the area. 6F all six took about three minutes to read between 88. And is easily hidden behind a plant. Ordered three of these and they do the job. I just wrote it off as a minor loss. The suction will never be the same.

Overall Score
4.5


(21 Points)

8. Inkbird Dual Probe Thermometer for Fish Tank, Water Terrarium Only for C929-A Probe

Inkbird First Impressions

"2-degrees."

Set all six probes up in a terrarium with a constant temp of 88. I can't say which is the most accurate and don't really care. If the digital display starts to get dim, it's time for a new battery. These digital thermometers are great and there is no guesswork involved. These are the perfect size to be easily read while not being obtrusive. Place it on your aquarium and you are good to go. I find that the temps are accurate, and this product gives added peace of mind.

  • Inkbird Dual Probe Thermometer for Fish Tank, Water Terrarium Only for C929-A Probe
  • Manufacture: Inkbird
  • Editor's Impressions Of The Inkbird
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"So far so good."

And for the price you cant beat it. I recommend gluing the suction cups in place where needed for long-term installation. The non-working ones still provide 2 batteries each AND. So much easier than the ones that hang on the inside. This little wonder allows me to see at a glance that everything is as it should be. So far I've been very thrilled with these. Who knows, whatever it was, it was revolting!

Overall Score
5.0


(1 Points)

9. Exo Terra Exo Terra Liquid Crystal Thermometer

User Ratings: 56 11

Exo Terra PT2455 First Impressions

"No complaints."

I guess these units do not like saltwater. Only thing I don't love is how long the cord is. Since it is a mercury thermometer, it is very accurate. The non-working ones still provide 2 batteries each AND. Put them all in the same tank and they read very close to each other. We are using them to measure various temperatures inside and outside of a motorhome. In the right situation this magnet thermometer is the best available.

  • Exo Terra Exo Terra Liquid Crystal Thermometer
  • Liquid Crystal Thermometer
  • Can be placed inside or outside the terrarium
  • Wide range horizontal thermometer
  • Easy to read and install
  • Great for monitoring the temperature levels
  • Manufacture: Exo Terra
  • Product Dimensions: 0.2 x 3.3 x 7.2 inches; 0.32 Ounces
  • Editor's Impressions Of The Exo Terra PT2455
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Exo Terra PT2455 Final Thoughts

"Fish and me happy."

However, Lucy at Zacro read this review and emailed me. The only reason I didn't give this 5 stars is because my betta fish didn't like it. I recommend gluing the suction cups in place where needed for long-term installation. It is my opinion that everyone should have these that are in the Aquarium Hobby. I got the second one as a bonus that I'm now using in my old tank. In the right situation this magnet thermometer is the best available. When and if we run out of this batch, I'll instantly order another batch.

Overall Score
4.0


(122 Points)

10. Finest-Filters Waterproof Aquarium Fish Tank Thermometer Digital LED Submersible

Finest-Filters First Impressions

"Close enough I reckon!"

So far, they're all doing their job in my four tanks and I am quite content. This is my first 5 star review out of many many reviews on Amazon. I used these on a number of my aquariums that have discus fish in them. So versatile, I can read the temperatures literally anywhere. In the right situation this magnet thermometer is the best available. This thermometer is spot on accurate. I tested this in a cup crammed full of ice and some water.

  • Finest-Filters Waterproof Aquarium Fish Tank Thermometer Digital LED Submersible
  • You are purchasing a submersible aquarium digital thermometer.
  • These thermometers can be completely submerged in the aquarium to provide an extremely accurate temperature display.
  • This thermometer has a temperature range of 19.9 to 70 degrees Celsius.
  • Suitable for salt water and fresh water aquariums, reptiles and green houses.
  • Complete with batteries.
  • Manufacture: Finest-Filters
  • Editor's Impressions Of The Finest-Filters
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Finest-Filters Final Thoughts

"Disappointed."

I use a small flashlight if I don't want to brighten the area. This doesn't bother me as it ws so cheap. I guess these units do not like saltwater. It worked great and I highly recommend it! If the digital display starts to get dim, it's time for a new battery. It's kind of difficult to hide and keep out of the way. I used these to raise chicks, and in my parrot cages.

Overall Score
3.0


(2 Points)

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