Editor's Choice - Our Favorite Penn-Plax Aquarium Thermometers

1. 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 [star rating='3.7']
• Quality [star rating='4.1']
• Value For Money [star rating='4.9']
• Affordability [star rating='5']

Peoples Choice - Other Highly Rated Penn-Plax Aquarium Thermometers

2. Penn-Plax Stainless Steel Thermometer

User Ratings: 52 25

Penn-Plax 54537105 First Impressions

"Only thing the battries."

I don't think they are backlit but for the price they are still nice. I have mine on my 60 gallon cube marine tank. Since it is a mercury thermometer, it is very accurate. One of my aquariums is glass, and the other two are plastic. Personally I do not mind the way it looks in my aquarium. This temperature read a perfect 32 degrees. I find that the temps are accurate, and this product gives added peace of mind.

• Penn-Plax Stainless Steel Thermometer
• Penn-Plax is committed to creating and manufacturing innovative pet products
• Penn Plax is a name that stands for Quality Innovation and Integrity
• Experience a great line of Pet Products
• Manufacture: Pro-Motion Distributing - Direct
• Product Dimensions: 5 x 2 x 4 inches; 0.71 Ounces

• Editor's Impressions Of The Penn-Plax 54537105
• Thermometer Accuracy [star rating='2.6']
• Quality [star rating='4']
• Value For Money [star rating='3.8']
• Affordability [star rating='4.5']

3. Penn Plax PP37201 Digital Aquarium Thermometer

User Ratings: 60

Penn-Plax First Impressions

"So far loving it."

So the extra units will always come in handy. The digital display itself is easy to read at a glance. In the right situation this magnet thermometer is the best available. Works well in my betta tank, but provide a couple hours for it to read temp changes. He acted aggressively towards it and so I ultimate ended up removing it due to that. The lid is textured aluminum, and the suction cups don't stick to that. I bought these for my dwc reservoirs.

• Penn Plax PP37201 Digital Aquarium Thermometer
• Clear numbers for easy readings
• Displays Fahrenheit and Celsius temperatures
• Pressure-sensitive backing mounts outside of tank
• Manufacture: Penn Plax

• Editor's Impressions Of The Penn-Plax
• Thermometer Accuracy [star rating='3.8']
• Quality [star rating='4.4']
• Value For Money [star rating='4.3']
• Affordability [star rating='4.6']

Here Are Some Other Related Aquarium Thermometers

4. Chuiouy Fish Tank Temp Meter Aquarium Thermometer LCD 3D Digital Electronic Temperature Recorder Tes...

Chuiouy First Impressions

"Hope this helps!"

It is my opinion that everyone should have these that are in the Aquarium Hobby. And I just really started to doubt it. SIX Digital Thermometers with SIX batteries INCLUDED working so well. I have mine on my 60 gallon cube marine tank. Good cheap accurate aquarium thermometer. For something so cheap, they are working remarkably well. I am extremely pleased with this product.

• Chuiouy Fish Tank Temp Meter Aquarium Thermometer LCD 3D Digital Electronic Temperature Recorder Tester
• ★ High transparent Crystal glass shell design, fashion and super 3D perspective effect!
• ★Multi-purpose thermometer, can be used as a body thermometer, aquarium thermometer, indoor and outdoor thermometer and so on
• ★ Exquisite small, two sides' adhesive stickers, convenient and simple
• ★ Precise chip, High sensitive electronic sensors to measure temperature, accuracy up to 0.1 Degree
• ★Ideal For: Aquarium,fish tank // Measuring Range: -45℃～80℃
• Manufacture: #CY20190801013

• Editor's Impressions Of The Chuiouy
• Thermometer Accuracy [star rating='3.7']
• Quality [star rating='2.7']
• Value For Money [star rating='2.5']
• Affordability [star rating='3.3']

5. uxcell 18 to 34-Degree C Plastic Fish Tank Thermometer Sticker

User Ratings: 32

uxcell a13082400ux0472 First Impressions

"Versatile."

89 I could buy Six Thermometers with Six included batteries. I don't think i'll ever be able to trust a digital thermometer again. You dont HAVE to stick the display onto your tank. The suction cups work well anywhere I have placed it it has not Fallen. It worked great and I highly recommend it! And I just really started to doubt it. This thermometer is spot on accurate.

• uxcell 18 to 34-Degree C Plastic Fish Tank Thermometer Sticker
• Product Name : Aquarium Thermometer Sticker;Color : Black, White
• Material : Plastic
• Size : Rectangle: 13 x 1.9cm/ 5.1" x 0.75"(L*W);Round: 5cm/2"(Diamater)
• Weight : 2g
• Package Contents : 1 × Aquarium Thermometer Sticker
• Manufacture: uxcell
• Product Dimensions: 5.07 x 0.74 x 0.12 inches; 0.32 Ounces

• Editor's Impressions Of The uxcell a13082400ux0472
• Thermometer Accuracy [star rating='3.8']
• Quality [star rating='4.8']
• Value For Money [star rating='4.4']
• Affordability [star rating='3.8']

6. uxcell Temperature Gauge Aquarium Thermometer with Probe for Refrigerator 2pcs

uxcell First Impressions

"Not just for aquariums!"

For the price I'll probably end up putting these in all of my aquariums. He was moving slow in the winter and we realized he needed a heater! You can not swivle the thermometer to face a certain way. Instead she sent a new package of two, both of which work. I have it in both my aquariums now. So far, they're all doing their job in my four tanks and I am quite content. I used these to raise chicks, and in my parrot cages.

• uxcell Temperature Gauge Aquarium Thermometer with Probe for Refrigerator 2pcs
• Temperature range: -50°C ~ +85°C (-58°F ~ +185°F)
• Designed to be surface mounted
• Battery Operated (included) (Aprox 2 year battery life)
• Remote wired probe can read temperature up to 3.3 feet away
• Perfect for use in refrigerator, aquarium tank, fish tank, pet cage, bedroom or any other place that requires monitoring of temperature.
• Manufacture: Uxcell
• Part Number: A19010400ux0397
• Item Weight: 2.89 ounces
• Size: 2 Piece
• Power Source: Battery Powered
• Batteries Required?: No

• Editor's Impressions Of The uxcell
• Thermometer Accuracy [star rating='4.1']
• Quality [star rating='3.9']
• Value For Money [star rating='3.5']
• Affordability [star rating='4.3']

7. GUOOU Aquarium Thermometer Sticker, Stick On Brewing Thermometer Strip, Temperature Display for Ferm...

User Ratings: 50

GUOOU First Impressions

"2 degrees of each other."

In this scenario it would probably get knocked loose a lot. All were Close enough for a fish tank and other uses. Checked with temp gun and the terrarium was on target at 88. I have it in both my aquariums now. I just wrote it off as a minor loss. Works well in my betta tank, but provide a couple hours for it to read temp changes. Only thing I don't love is how long the cord is.

• GUOOU Aquarium Thermometer Sticker, Stick On Brewing Thermometer Strip, Temperature Display for Fermenting, Wine, Beer, Kombucha, 64℉ to 93℉, 20 Pack
• 20 value set, 10 piece of Horizontal version and 10 piece of vertical version, meet your multiple needs.
• Dimensions: 5.1 x 0.7 inch / 13 x 1.8 cm
• The thermometer strip has a range of 64℉ to 93℉ and 18℃ to 34℃, the large numbers are Fahrenheit and the small numbers are Centigrade.
• Easy to use, simply peel off the backing off and attach the thermometer sticker to the outside surface of aquarium, fish tank, wine jar, fermentation bucket and so on, works for fermenting kombucha, lagers and ales, one time use.
• Responsive and easy to read, it will shows different color with different temperature, if it show multi-color, please choose the average value.
• Manufacture: GUOOU

• Editor's Impressions Of The GUOOU
• Thermometer Accuracy [star rating='3.6']
• Quality [star rating='3.6']
• Value For Money [star rating='4.5']
• Affordability [star rating='3.7']

8. POPETPOP LCD Digital Aquarium Thermometer High Precision Digital Fish Tank Thermometer for Aquarium/...

User Ratings: 60 7

POPETPOP First Impressions

"I am new to the hobby."

Very impressed, I have now had them in used for a month so far. Now if it falls into a sink full of water, it's not a problem. I use a small flashlight if I don't want to brighten the area. So much so that I purchased a second set of 6. This little wonder allows me to see at a glance that everything is as it should be. I find that the temps are accurate, and this product gives added peace of mind. In the right situation this magnet thermometer is the best available.

• POPETPOP LCD Digital Aquarium Thermometer High Precision Digital Fish Tank Thermometer for Aquarium/Pond/Reptile Turtles Habitats (Blue)
• TEMPERATURE - Temperature range is -20℃ ~ + 70℃. Temperature accuracy is ±1℃(±2℉). Update measured temperature every 10 seconds.
• READINGS - LCD screen displays measured temperature which can be switched between ℃ and ℉, and it can save the maximum and minimum readings during past tests.
• SCREEN - Large screen displays clearly, no dead corner on the left or right make it looks more beautiful. Besides, if you want a clearer screen displays, you can remove the screen protector.
• INSTALLATION - Easy and convenient to install at fish tank with suction cup or spring clip that make sure space-saving and portable. You can put this small thermometer at anyplace you want to place. (Please only submerge probe, don't submerge thermometer in water)
• MATERIAL - Eco-friendly ABS shell which is tough and hard. Excellent mechanical properties make the device safer, wear-resistant and stable. High accuracy with professional sensor, it can measure temperature more correctly than same product. Powered by two AG13 button cells (included).
• Manufacture: POPETPOP
• Product Dimensions: 2.76 x 2.76 x 1.18 inches; 1.8 Ounces

• Editor's Impressions Of The POPETPOP
• Thermometer Accuracy [star rating='4.5']
• Quality [star rating='4.7']
• Value For Money [star rating='4']
• Affordability [star rating='5']

9. Marina Floating Thermometer with Suction Cup

User Ratings: 70 5

Marina 11201A1 First Impressions

"So I guess I needed them!"

This thermometer is spot on accurate. So much so that I purchased a second set of 6. Still a recommendation for me due to price and accuracy. Personally I do not mind the way it looks in my aquarium. The digital display is nice and small as well. A bit large for anything smaller than 5 gallons, but that's to be expected. This is my first 5 star review out of many many reviews on Amazon.

• Marina Floating Thermometer with Suction Cup
• Easy to read floating aquarium thermometer with suction cups
• Includes a safety zone indicator appropriate for most tropical fish
• Equipped with suction cups to attach to the side of your fish tank
• Ensures your aquarium is at the proper temperature
• Thermometer is 4.25 inches tall
• Manufacture: Marina
• Product Dimensions: 7 x 4 x 1 inches; 0.35 Ounces

• Editor's Impressions Of The Marina 11201A1
• Thermometer Accuracy [star rating='3.9']
• Quality [star rating='3.5']
• Value For Money [star rating='3.7']
• Affordability [star rating='4.8']

10. Sunsbell Aquarium Thermometer Digital Touch Screen Fish Tank Thermometer with Large LCD Display

Sunsbell 6M1048127R0PHUV First Impressions

"It is within."

Set all six probes up in a terrarium with a constant temp of 88. 82 PER THERMOMETER with battery included. I ordered this guy and it was 6 degrees hotter than the digital! My 50+ eyes cannot read a regular tank thermometer without squinting. I think the people who said the suction cup broke. Excellent working for our bearded dragon tank. It is easy to use and install it'disappears' in your tank it is so unobtrusive.

• Sunsbell Aquarium Thermometer Digital Touch Screen Fish Tank Thermometer with Large LCD Display
• Backside temperature sensor can stick on the outside glass of the fish tank prevent water infiltration and electronic Oxidation, compact design with Large Crystal Touch Screen makes it easier to read the temperature far away, stands out among other Fish Tank thermometers.
• 3.2 large glass screen is larger than most of the thermometers, large temperature display on transparent screen, will not block your view.
• With an accurate temperature sensor stick on the surface of the fish tank, this Digital aquarium thermometer will display accurate temperature for fish tank, reading from 0°C to 70°C / 32°F - 158°F, accurate to 0.1°.
• Pull down the red battery cover below the screen, insert battery, close it, stick on and read the tank temperature. press up or down to switch °C / °F.
• Suitable for different water types such as fresh water, tap water, salty water, marine water and monitors the living temperature for reptile such as lizard, turtle. Also, it can be used for DIY brew beer and wine barrel, terrarium, greenhouse, pet tank thermometer.
• Manufacture: Sunsbell
• Product Dimensions: 2.95 x 2.95 x 0.28 inches; 2.82 Ounces

• Editor's Impressions Of The Sunsbell 6M1048127R0PHUV
• Thermometer Accuracy [star rating='4']
• Quality [star rating='5']
• Value For Money [star rating='3.8']
• Affordability [star rating='4.9']