Editor's Choice - Our Favorite JW Pet Aquarium Thermometers

1. JW Pet Company Smarttemp Thermometer Aquarium Accessory

User Ratings: 72 6

JW Pet 21600 First Impressions

"Working wonderfully!"

These digital thermometers are great and there is no guesswork involved. So the extra units will always come in handy. Since it is a mercury thermometer, it is very accurate. I did have a problem with one in my first pack of 6. I have mine on my 60 gallon cube marine tank. Only thing I don't love is how long the cord is. When and if we run out of this batch, I'll instantly order another batch.

  • JW Pet Company Smarttemp Thermometer Aquarium Accessory
  • In-tank thermometer is secured with magnet outside the tank
  • No suction cups needed
  • Green safe zone indicates optimal temperature range
  • Large easy to read numbers
  • Manufacture: JW Pet Company
  • Product Dimensions: 4 x 7 x 0.5 inches; 1.12 Ounces
  • Editor's Impressions Of The JW Pet 21600
  • Thermometer Accuracy [star rating='4.2']
  • Quality [star rating='4.4']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='4.2']

JW Pet 21600 Final Thoughts

"I like this."

I used these on a number of my aquariums that have discus fish in them. It works equally well on all of them. Very impressed, I have now had them in used for a month so far. So far, they're all doing their job in my four tanks and I am quite content. So this is the extreme end of the high temperature range. I have to admit I had two reasons for buying six. The extra batteries where very much appreciated and came in handy.

Overall Score
4.5

[star rating="4.5"]
(1488 Points)

Peoples Choice - Other Highly Rated JW Pet Aquarium Thermometers

2. Smarttemp Thermometer

User Ratings: 75 10

JW Pet BC209450 First Impressions

"Close enough I reckon!"

You can use the thermometer with or without the plastic suction cup. I ordered a new one and it works GREAT! Ordered three of these and they do the job. 82 PER THERMOMETER with battery included. I ordered this guy and it was 6 degrees hotter than the digital! The only reason I didn't give this 5 stars is because my betta fish didn't like it. These things are useful for a lot besides pet husbandry, too.

  • Smarttemp Thermometer
  • Stays in place with a unique magnetic fastening system.
  • Smarttemp Thermometer
  • All items are brand new, never worn and never used. We guarantee the authenticity of all items.
  • Manufacture: JW - Dog/Cat/Aquatic
  • Product Dimensions: 7 x 4 x 0.6 inches; 0.8 Ounces
  • Editor's Impressions Of The JW Pet BC209450
  • Thermometer Accuracy [star rating='3.5']
  • Quality [star rating='3.8']
  • Value For Money [star rating='4.7']
  • Affordability [star rating='4.7']

JW Pet BC209450 Final Thoughts

"Only thing the battries."

Since it is a mercury thermometer, it is very accurate. It is about 6 inches in length and roughly an inch wide. It is large enough to see without being obtrusive. It works equally well on all of them. Far more accurate than the usual small glass ones or external LCD strips. Now if it falls into a sink full of water, it's not a problem. Ordered three of these and they do the job.

Overall Score
4.4

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

3. Dual Dial Reptile Thermometer Hygrometer Gauge for Lizard Tortoise Spider Chameleon Reptiles Terrari...

N / A First Impressions

"1 degree of each other."

Sure enough the digital thermometer was way off by 6 degrees! This thermometer is spot on accurate. I don't think they are backlit but for the price they are still nice. This thermometer is spot on accurate. I have kept aquariums for about 45 years. Excellent working for our bearded dragon tank. The digital display is nice and small as well.

  • Dual Dial Reptile Thermometer Hygrometer Gauge for Lizard Tortoise Spider Chameleon Reptiles Terrarium Tank
  • Temperature measurement range: -30 to 50°C; humidity measurement range: 0% to 100% RH
  • Simultaneous temperature and humidity measurement, mechanical induction, no need for battery, with silent effect.
  • The measuring distance is far, and the scale number can also be read clearly at a long distance. There are text and color blocks to distinguish comfort level
  • The sensing speed is fast, temperature and humidity are sensed at the same time, and the value is accurate.
  • If you have any question about our product, please contact us, we will reply and help you in 24 hours
  • Manufacture: N / A
  • Product Dimensions: 6.1 x 2.95 x 0.59 inches; 2.19 Ounces
  • Batteries: Unknown batteries required.
  • Editor's Impressions Of The N / A
  • Thermometer Accuracy [star rating='3.6']
  • Quality [star rating='3.4']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='3.6']

N / A Final Thoughts

"Would recommend!"

I have this thermometer on all my tanks. I don't think i'll ever be able to trust a digital thermometer again. Checked with temp gun and the terrarium was on target at 88. So far I've been very thrilled with these. These digital thermometers are great and there is no guesswork involved. My poor fish was in 86 degrees water for a month. I don't think i'll ever be able to trust a digital thermometer again.

Overall Score
3.0

[star rating="3"]
(1 Points)

4. uxcell Plastic Aquarium Self Adhesive Water Temperature Dual Thermometer Sticker 2 in 1

uxcell a17022200ux1475 First Impressions

"Very accurate."

I think the people who said the suction cup broke. The display can be set to Fahrenheit or Celsius. We are using them to measure various temperatures inside and outside of a motorhome. It is large enough to see without being obtrusive. I use a small flashlight if I don't want to brighten the area. Far more accurate than the usual small glass ones or external LCD strips. So the extra units will always come in handy.

  • uxcell Plastic Aquarium Self Adhesive Water Temperature Dual Thermometer Sticker 2 in 1
  • Weight: 2g; Color: White,Black,Brown
  • Package Content: 2 in 1 x Aquarium Temperature Stickers; Product Name: Aquarium Temperature Sticker
  • Material: Plastic; Tenperature Range: (Degrees Celsius):-18 to 34
  • Long Stickers Size: 13 x 2.8 x 0.1cm/5.1" x 1.1" x 0.03"(L*W*H)
  • Round Stickers Size: 5 x 0.1cm/2" x 0.03"(W*H)
  • Manufacture: uxcell
  • Editor's Impressions Of The uxcell a17022200ux1475
  • Thermometer Accuracy [star rating='4.8']
  • Quality [star rating='4.6']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='5']

uxcell a17022200ux1475 Final Thoughts

"And I am glad I did."

I use a small flashlight if I don't want to brighten the area. Since it is a mercury thermometer, it is very accurate. So much easier than the ones that hang on the inside. My only complaint is that they tend to be a one time use. I have to admit I had two reasons for buying six. The non-working ones still provide 2 batteries each AND. A battery can last you up to six months, I'd say, but expect more like three.

Overall Score
5.0

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

5. ATI Aquarium Thermometer (Pack of 3)

American Thermal First Impressions

"Sticks easy."

I have always had trouble reading the color temp. The display can be set to Fahrenheit or Celsius. It works equally well on all of them. It is about 6 inches in length and roughly an inch wide. 82 PER THERMOMETER with battery included. My poor fish was in 86 degrees water for a month. They reviewed the packaging or shipping by saying it arrived broken.

  • ATI Aquarium Thermometer (Pack of 3)
  • Accurate
  • Easy to read.
  • Mounts on the outside of your aquarium.
  • Vertical
  • Pack of 3
  • Manufacture: American Thermal
  • Item Weight: 0.32 ounces
  • Product Dimensions: 7.8 x 4.2 x 1.3 inches
  • Editor's Impressions Of The American Thermal
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='4.1']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='4.4']

American Thermal Final Thoughts

"Great price too."

The plastic from the suction cup quickly turned from a clear to a milky white. This temperature read a perfect 32 degrees. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Put them all in the same tank and they read very close to each other. So this is the extreme end of the high temperature range. I used these on a number of my aquariums that have discus fish in them. Water tested with Autidefy brand for two hours.

Overall Score
5.0

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

6. Smarttemp Thermometer

User Ratings: 75 10

JW Pet BC209450 First Impressions

"Close enough I reckon!"

You can use the thermometer with or without the plastic suction cup. I ordered a new one and it works GREAT! Ordered three of these and they do the job. 82 PER THERMOMETER with battery included. I ordered this guy and it was 6 degrees hotter than the digital! The only reason I didn't give this 5 stars is because my betta fish didn't like it. These things are useful for a lot besides pet husbandry, too.

  • Smarttemp Thermometer
  • Stays in place with a unique magnetic fastening system.
  • Smarttemp Thermometer
  • All items are brand new, never worn and never used. We guarantee the authenticity of all items.
  • Manufacture: JW - Dog/Cat/Aquatic
  • Product Dimensions: 7 x 4 x 0.6 inches; 0.8 Ounces
  • Editor's Impressions Of The JW Pet BC209450
  • Thermometer Accuracy [star rating='3.5']
  • Quality [star rating='3.8']
  • Value For Money [star rating='4.7']
  • Affordability [star rating='4.7']

JW Pet BC209450 Final Thoughts

"Only thing the battries."

Since it is a mercury thermometer, it is very accurate. It is about 6 inches in length and roughly an inch wide. It is large enough to see without being obtrusive. It works equally well on all of them. Far more accurate than the usual small glass ones or external LCD strips. Now if it falls into a sink full of water, it's not a problem. Ordered three of these and they do the job.

Overall Score
4.4

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

7. 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 [star rating='4']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='5']

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

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

8. Zoo Med Digital Thermometer

User Ratings: 71 5

Zoo Med TH-24 First Impressions

"Sticks easy."

When I set up my newest tank I will be getting another one of these. This is my first 5 star review out of many many reviews on Amazon. I used these to raise chicks, and in my parrot cages. I am extremely pleased with this product. I used to have a large hang in the side tank that you couldn't miss. Now if it falls into a sink full of water, it's not a problem. This is my first 5 star review out of many many reviews on Amazon.

  • Zoo Med Digital Thermometer
  • External sensor can go in water
  • Fahrenheit and Celsius
  • LCD readout
  • Pack of 3
  • Manufacture: Zoo Med
  • Product Dimensions: 4 x 1 x 5.3 inches; 0.63 Ounces
  • Editor's Impressions Of The Zoo Med TH-24
  • Thermometer Accuracy [star rating='4.5']
  • Quality [star rating='4.5']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4.9']

Zoo Med TH-24 Final Thoughts

"They are within 0."

SIX Digital Thermometers with SIX batteries INCLUDED working so well. I have always had trouble reading the color temp. You can use the thermometer with or without the plastic suction cup. Now that the chickens are grown, I have one out in the coop as well. SIX Digital Thermometers with SIX batteries INCLUDED working so well. This thermometer is spot on accurate. I got the second one as a bonus that I'm now using in my old tank.

Overall Score
4.3

[star rating="4.3"]
(22 Points)

9. Zoo Med Analog High Range Reptile Thermometer

User Ratings: 54 12

Zoo Med TH20 First Impressions

"9, and 78."

The only reason I didn't give this 5 stars is because my betta fish didn't like it. Excellent working for our bearded dragon tank. Ordered three of these and they do the job. I used to have a large hang in the side tank that you couldn't miss. I find that the temps are accurate, and this product gives added peace of mind. I find that the temps are accurate, and this product gives added peace of mind. 49 thermometer that is 100% accurate.

  • Zoo Med Analog High Range Reptile Thermometer
  • Velcro backing for easy removal during clean ups
  • Precision German movement
  • A must for high temperature species
  • Manufacture: Zoo Med Laboratories
  • Product Dimensions: 6.5 x 0.3 x 0.2 inches; 1.6 Ounces
  • Editor's Impressions Of The Zoo Med TH20
  • Thermometer Accuracy [star rating='4.2']
  • Quality [star rating='3.6']
  • Value For Money [star rating='3']
  • Affordability [star rating='2.9']

Zoo Med TH20 Final Thoughts

"Perhaps it's my fault."

6 in a pack, extra batteries, easy set up, great price. These are the perfect size to be easily read while not being obtrusive. These are the perfect size to be easily read while not being obtrusive. Still a recommendation for me due to price and accuracy. My only complaint is that they tend to be a one time use. It works equally well on all of them. You dont HAVE to stick the display onto your tank.

Overall Score
3.9

[star rating="3.9"]
(36 Points)

10. Horizontal Wide Range Liquid Crystal Thermometer

Aquarium Technology First Impressions

"That adds peace of mind."

It is about 6 inches in length and roughly an inch wide. 6F all six took about three minutes to read between 88. It is my opinion that everyone should have these that are in the Aquarium Hobby. And is easily hidden behind a plant. I find that the temps are accurate, and this product gives added peace of mind. The digital display itself is easy to read at a glance. We are using them to measure various temperatures inside and outside of a motorhome.

  • Horizontal Wide Range Liquid Crystal Thermometer
  • Range from 70 degrees F to 102 degrees F
  • Ideal for terrariums or aquariums
  • Easy to read indicators
  • Fahrenheit/Celcius scale
  • Mounts to galss or acrylic surfaces
  • Manufacture: Aquarium Technology, Inc
  • Item Weight: 1 Pounds
  • Editor's Impressions Of The Aquarium Technology
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.9']

Aquarium Technology Final Thoughts

"Not just for aquariums!"

A battery can last you up to six months, I'd say, but expect more like three. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. We are using them to measure various temperatures inside and outside of a motorhome. Very impressed, I have now had them in used for a month so far. It worked great and I highly recommend it! It is about 6 inches in length and roughly an inch wide. It's kind of difficult to hide and keep out of the way.

Overall Score
5.0

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

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