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']

Here Are Some Other Related Aquarium Thermometers

2. XYZReptiles Digital Reptile Thermometer

User Ratings: 49

XYZREPTILES.COM QUALITY · SERVICE · SELECTION First Impressions

"Hope this helps!"

I had my heater set at 73-degrees and the thermometers showed 74. He acted aggressively towards it and so I ultimate ended up removing it due to that. Sure enough the digital thermometer was way off by 6 degrees! I used these on a number of my aquariums that have discus fish in them. I used these to raise chicks, and in my parrot cages. One of my aquariums is glass, and the other two are plastic. I have it in both my aquariums now.

• XYZReptiles Digital Reptile Thermometer
• Our digital tank thermometers are made from high quality electronics to ensure an accurate temperature reading
• Each digital thermometer easily switches between Celsius and Fahrenheit with a pin push to suite your preference
• Features a powerful suction cup to ensure a solid connection to your reptile terrarium so that it stays put; just wet before sticking it to the terrariums surface
• These futuristic and functional terrarium thermometers display a large digital temperature readout and are a vital part of every reptile habitat
• Measures 2.5 inches by 1 inch at its widest part
• Manufacture: XYZReptiles

• Editor's Impressions Of The XYZREPTILES.COM QUALITY · SERVICE · SELECTION
• Thermometer Accuracy [star rating='4.6']
• Quality [star rating='3.9']
• Value For Money [star rating='3.4']
• Affordability [star rating='3.5']

3. Mini Thermometer Hygrometer, Embedded LCD Digital Temperature Humidity Meter Gauge Monitor with Exte...

User Ratings: 65 11

Pssopp First Impressions

"Just received it today."

My only complaint is that they tend to be a one time use. The suction cups work well anywhere I have placed it it has not Fallen. It started working as soon as I put it in and has been working ever since. I guess these units do not like saltwater. So far, they're all doing their job in my four tanks and I am quite content. Who knows, whatever it was, it was revolting! 89 I could buy Six Thermometers with Six included batteries.

• Mini Thermometer Hygrometer, Embedded LCD Digital Temperature Humidity Meter Gauge Monitor with External Probe for Incubators, Brooders, Reptile Tank, Aquarium, Fish Tank
• High Precision - Temperature measurement accuracy up to ±1 Celsius Degree (under normal temperature), humidity measurement accuracy ±5%.
• 2 in 1 Meter - Integrated the thermometer and hygrometer in one meter, allows you easily and fast to know the environment temperature and humidity, convenient to use.
• Clear LCD Digital Display - LCD digital screen displays the number clearly, better visual effects, you can see the temperature or humidity in the distance.
• Wide Application - Perfect to use in incubators, brooders, cigar room, reptile tank, aquarium, fish tank and other places where you want, offering a comfortable living surrounding for your pet or reptiles.
• Measuring Range - The temperature humidity meter can measure the humidity in the range of 10%-99%, and temperature from -50℃ to 70℃ precisely.
• Manufacture: Pssopp
• Product Dimensions: 3.94 x 3.94 x 3.94 inches; 1.41 Ounces

• Editor's Impressions Of The Pssopp
• Thermometer Accuracy [star rating='4.4']
• Quality [star rating='4']
• Value For Money [star rating='4.1']
• Affordability [star rating='3.2']

4. Jardin Suction Cup Mounting Submersible Aquarium Index Thermometer, -10 to 50 Degree C

User Ratings: 46

JARDIN a12081700ux0929 First Impressions

"It sticks very firmly."

The non-working ones still provide 2 batteries each AND. However, Lucy at Zacro read this review and emailed me. Then she followed up again on that, asking if they had arrived and were okay. So much so that I purchased a second set of 6. Personally I do not mind the way it looks in my aquarium. He was moving slow in the winter and we realized he needed a heater! In this scenario it would probably get knocked loose a lot.

• Jardin Suction Cup Mounting Submersible Aquarium Index Thermometer, -10 to 50 Degree C
• Product Name: Aquarium Index Thermometer; Temperature Reading Range
• Product Name: Aquarium Index Thermometer; Temperature Reading Range: Aquarium: -50 Celsius Degree to +70Celsius Degree
• Main Material: Plastic; Total Length: 107cm/42.1"; Display Size: 5.8 x 3.7 x 1.2cm/2.3" x 1.5" x 0.48"(L x W x T)
• Probe Length: 2.1 × 0.5cm/0.83" × 0.2"(L x D); Cable Length(Approx.): 101cm/39.8"
• Net Weight: 24g; Package Contents: 1 × Aquarium Index Thermometer,2 × Suction Cups
• Manufacture: Dragonmarts Co. Ltd. / Uxcell
• Product Dimensions: 42.13 x 0.47 x 1.46 inches; 0.35 Ounces

• Editor's Impressions Of The JARDIN a12081700ux0929
• Thermometer Accuracy [star rating='4.3']
• Quality [star rating='4.3']
• Value For Money [star rating='4.7']
• Affordability [star rating='3.7']

5. Vacally New Glass Meter Aquarium Fish Tank Water Thermometer Suction Cup Aquarium Glass Thermometer ...

User Ratings: 57

Vacally Aquarium Accessories First Impressions

"Very accurate."

I used these to raise chicks, and in my parrot cages. Now if it falls into a sink full of water, it's not a problem. The suction will never be the same. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. It is large enough to see without being obtrusive. This is my first 5 star review out of many many reviews on Amazon. Works well in my betta tank, but provide a couple hours for it to read temp changes.

• Vacally New Glass Meter Aquarium Fish Tank Water Thermometer Suction Cup Aquarium Glass Thermometer Salt Marine
• ❤Material: glass ❤Test range: 0 ~ 40 ℃ ❤ Size: about 10.5cm ❤Quantity: 1
• ❤Clearly readable scale tells you to understand the temperature at two degrees Celsius and Fahrenheit.
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• Manufacture: SJHDFI49
• Product Dimensions: 4.13 x 0.39 x 0.39 inches; 0.6 Ounces

• Editor's Impressions Of The Vacally Aquarium Accessories
• Thermometer Accuracy [star rating='4.5']
• Quality [star rating='3.7']
• Value For Money [star rating='4.6']
• Affordability [star rating='4.4']

6. 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 [star rating='4.6']
• Quality [star rating='5']
• Value For Money [star rating='4.3']
• Affordability [star rating='5']

7. POPETPOP Aquarium Thermometer-Fish Tank Thermometer Hook Practical Universal Accessory Creative Glas...

POPETPOP First Impressions

"This is perfect."

82 PER THERMOMETER with battery included. You can use the thermometer with or without the plastic suction cup. I have it in both my aquariums now. The suction works for a month at a time- in pool and hot tub circulation. Ambient room temperature measures 72. For something so cheap, they are working remarkably well. He acted aggressively towards it and so I ultimate ended up removing it due to that.

• POPETPOP Aquarium Thermometer-Fish Tank Thermometer Hook Practical Universal Accessory Creative Glass Thermometer with Hook for Aquarium Fish Tank-6MM
• The maximum temperature is 40 degrees centigrade.
• Aquarium temperature gauge Hook design for easy install.
• The thermometer column is very sensitive, will always change according to the temperature.
• The right water temperature is very important for the health of your fish, a aquarium thermometer is very necessary.
• Simple to use and convenient to read.
• Manufacture: POPETPOP
• Product Dimensions: 5.71 x 0.94 x 0.2 inches; 0.71 Ounces

• Editor's Impressions Of The POPETPOP
• Thermometer Accuracy [star rating='3.6']
• Quality [star rating='2.2']
• Value For Money [star rating='2.4']
• Affordability [star rating='2.2']

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

9. 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 [star rating='4']
• Quality [star rating='4']
• Value For Money [star rating='4.9']
• Affordability [star rating='4.3']

10. American Thermal - Aquarium Vertical Thermometer

User Ratings: 63 6

Amercan Thermal BC002004 First Impressions

"Perfect customer service."

Very accurate, have checked it with other thermometers as well. One extra battery came with each unit. This doesn't bother me as it ws so cheap. I had my heater set at 73-degrees and the thermometers showed 74. Set all six probes up in a terrarium with a constant temp of 88. My only complaint is that they tend to be a one time use. So much so that I purchased a second set of 6.

• American Thermal - Aquarium Vertical Thermometer
• Accurate.
• Easy-to-read.
• Mounts on the outside of your aquarium.
• New movable thermometer.
• Vertical.
• Manufacture: Amercan Thermal
• Product Dimensions: 6.75 x 5 x 0.13 inches; 0.35 Ounces

• Editor's Impressions Of The Amercan Thermal BC002004
• Thermometer Accuracy [star rating='4.4']
• Quality [star rating='3.6']
• Value For Money [star rating='3.6']
• Affordability [star rating='4']