Editor's Choice - Our Favorite WiFi Aquarium Thermometers

1. Inkbird Wireless Thermometer and Hygrometer Use Android and iOS Smart Sensor Data Logger with Extern...

User Ratings: 60 5

Inkbird First Impressions

"Easy set up."

It's kind of difficult to hide and keep out of the way. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. My poor fish was in 86 degrees water for a month. As you can see from my photos, in both°F and°C, all six are within. It started working as soon as I put it in and has been working ever since. Who knows, whatever it was, it was revolting! And for the price you cant beat it.

  • Inkbird Wireless Thermometer and Hygrometer Use Android and iOS Smart Sensor Data Logger with External Aquarium Probe for Aquarium Pet Shrimp Coral Fish Aquatic Pets
  • 【Flexible】 Add an Inkbird M1 WiFi Gateway (sold separately) for data and alerts via the Internet. It's BT(Bluetooth) enable without gateway
  • 【APP & Multiple Devices】 Free APP (Engbird) can be applied to IOS and Android system, which supports multi-language. History and immediacy data can be remotely checked. One mobile phone can monitor more than one sensor, and one sensor can be monitored by more than one mobile phone.
  • 【Measuring Range】 Monitoring Range: 30 meters / 100ft (No Obstructions). Temperature Range: -104~140°F/-40~60°C (Inner Sensor), -104~212°F/-40~100°C (External Probe). Humidity Range: 0~99%RH
  • 【Data Storage & Sampling Interval】 Hold data for 20 days if the sampling interval is 1min, and the max date storage is 30000 points. Different sampling interval can be setting.(10s/ 30s/ 1min/ 2mins/ 5mins/ 10mins/ 30mins) The saving data time will be different if you choose different sampling interval.
  • 【Probe & Mode】 Inside and external probe are supplied.External aquarium probes can only measure temperature, not both internal and external temperatures.
  • - Free IOS and Android APP to monitor temperature and humidity at any time
  • - APP supports multi language, °C /°F mode and product with magnet base
  • - One phone can connect more than one IBS-TH1 at the same time. And one IBS-TH1 can be connected with more than one phone at the same time
  • Manufacture: Inkbird
  • Item Weight: 3.2 ounces
  • Editor's Impressions Of The Inkbird
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"Changed to 5-stars now."

These things are useful for a lot besides pet husbandry, too. I read some of the 1 star reviews and most of them are not about the product. This doesn't bother me as it ws so cheap. I don't think they are backlit but for the price they are still nice. My 50+ eyes cannot read a regular tank thermometer without squinting. And for the price you cant beat it. In the right situation this magnet thermometer is the best available.

Overall Score
4.2


(35 Points)

Peoples Choice - Other Highly Rated WiFi Aquarium Thermometers

2. Inkbird C929A Smart Digital WiFi Temperature Controller for Aquarium Fish Tank Wireless Thermostat f...

User Ratings: 48 13

Inkbird First Impressions

"They all were within."

He acted aggressively towards it and so I ultimate ended up removing it due to that. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. 6 in a pack, extra batteries, easy set up, great price. The units each had a battery in place and situated for immediate use. This little wonder allows me to see at a glance that everything is as it should be. Very accurate, have checked it with other thermometers as well. This thermometer is spot on accurate.

  • Inkbird C929A Smart Digital WiFi Temperature Controller for Aquarium Fish Tank Wireless Thermostat for Reptiles Terrarium
  • Equipped with 2 probes measure the temperature,double protection from overheating,peace in mind.
  • WiFi & APP remote monitor & control, get alarms of high/low-temperature or errors from APP & device
  • Easy to set up, plug and play, pre-wired and compatible with 110V heaters or fans.1200W max
  • Alarms if the Temperature difference is over 5℉, or continuous heating time exceeds expectations
  • Built-in dual relays enable power off when one of the relays is defective, overheated is prevent
  • Manufacture: Lerway Tech
  • Product Dimensions: 3.54 x 1.18 x 2.48 inches; 7.83 Ounces
  • Editor's Impressions Of The Inkbird
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"Easy to setup in tank."

It worked great and I highly recommend it! You can glue, tape or simply cover the cords in the tank to keep them discreet. So far I've been very thrilled with these. I'm pretty sure those reviewers have acrylic tanks. Was going to get a floater until I saw this magnetic one! The plastic from the suction cup quickly turned from a clear to a milky white. I have always had trouble reading the color temp.

Overall Score
3.9


(30 Points)

3. Aquarium Sticker Thermometer, Precise Measurement of Tank’s Temperature, Ideal for Fish, Shrimps &...

User Ratings: 69 7

SunGrow First Impressions

"Love this product!"

I have bought many many temperature gauges for my various fish tanks over the years. All were Close enough for a fish tank and other uses. Then she followed up again on that, asking if they had arrived and were okay. One being a very expensive digital. I find that the temps are accurate, and this product gives added peace of mind. I ordered this guy and it was 6 degrees hotter than the digital! One of my aquariums is glass, and the other two are plastic.

  • Aquarium Sticker Thermometer, Precise Measurement of Tank’s Temperature, Ideal for Fish, Shrimps & Turtles, Ensures pet Health, Increases Lifespan, Peel & Stick Installation, 2 Color Indicators
  • ✔ MEASURES TANK TEMPERATURE FOR PROPER & CONSISTENT MONITORING --- Maintaining an aquarium tank with pets means having to actively measure the temperature of their living environment. Always being aware of its correct hotness or coldness level can make you do necessary adjustments to ensure that it is consistently ideal for your pets. Aquarium Sticker Thermometer by SunGrow will help you determine if your aquatic pets are living in a suitable environment condition.
  • ✔ HELPS PROTECT YOUR AQUARIUM PETS FROM DISEASES AND DEATH --- Fish and amphibians are highly sensitive even to a slight change in temperature. It is a must to keep their surroundings as close as possible to their natural habitat. An inconsistent aquatic environment can cause bettas, turtles to be stressed, sick or even die.
  • ✔ AIDS IN REPRODUCTION & LONGER LIFESPAN --- Cold-blooded species change with the temperature of their surroundings. Keeping it right along with proper nutrition can triple their lifespan. Any big difference from the ideal will directly affect the breeding process. It also affects their growth development, activity levels and overall wellness.
  • ✔ EASY MONITORING OF TEMPERATURE WITH 2-COLOR INDICATORS --- It’s time to stop the guessing game of aquarium temperature because this handy sticker thermometer will give you the precise range of your tank’s temperature with 2-color indicators. Blue color depicts the exact temperature. When you spot both Green and Blue colors on the strip, it indicates that the temperature is between them.
  • ✔ NO SUCTION CUPS OR BATTERIES NEEDED --- This self-adhesive strip can be installed in two easy steps: Peel & Stick! No need to worry about suction cups or batteries and experience a worry-free monitoring. Measuring 5.1” tall by 0.7” wide, it can read a temperature range between 64 and 93 Degree Fahrenheit / 18 and 34 Degree Celsius. Please note that Fahrenheit is in big bold letters and Celsius is in small.
  • Manufacture: Luffy Pets Collection
  • Editor's Impressions Of The SunGrow
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

SunGrow Final Thoughts

"Fish are doing very well."

The units each had a battery in place and situated for immediate use. I used these on a number of my aquariums that have discus fish in them. The lid is textured aluminum, and the suction cups don't stick to that. Works well in my betta tank, but provide a couple hours for it to read temp changes. We are using them to measure various temperatures inside and outside of a motorhome. All were Close enough for a fish tank and other uses. The digital display is nice and small as well.

Overall Score
4.3


(53 Points)

4. KollerCraft TOM Temp Alert Digital Thermometer for Aquariums

User Ratings: 39 13

KollerCraft TM1208 First Impressions

"A solid five stars."

The only reason I didn't give this 5 stars is because my betta fish didn't like it. I'm pretty sure those reviewers have acrylic tanks. And for the price you cant beat it. I did have a problem with one in my first pack of 6. Was going to get a floater until I saw this magnetic one! Checked with temp gun and the terrarium was on target at 88. The non-working ones still provide 2 batteries each AND.

  • KollerCraft TOM Temp Alert Digital Thermometer for Aquariums
  • Digital thermometer for aquariums reliably monitors high and low temperatures
  • Audible and LED notifications when temperatures fall below or rise above presets
  • Presets for a low of 75 degrees F and a high of 82 degrees F
  • For use in both freshwater and saltwater aquariums
  • Plastic probe with suction cup, 3-foot cord
  • Warning when the temperature goes outside the preset range
  • Display is easy to read
  • Temperature reading is very accurate
  • Manufacture: Koller Enterprises
  • Product Dimensions: 7.5 x 5 x 1.5 inches; 1.6 Ounces
  • Editor's Impressions Of The KollerCraft TM1208
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

KollerCraft TM1208 Final Thoughts

"Never had any problems."

Very impressed, I have now had them in used for a month so far. 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. I have this thermometer on all my tanks. 82 PER THERMOMETER with battery included. I tested this in a cup crammed full of ice and some water. I had my heater set at 73-degrees and the thermometers showed 74.

Overall Score
3.7


(52 Points)

5. Amer Thermal Instruments Liquid Crystal Vertical Aquarium Thermometer, Small

User Ratings: 73 7

Amer Thermal Instruments BC002021 First Impressions

"Holds a steady 1."

Then is started to give a low reading, and it is not reading the correct temperature. The digital display itself is easy to read at a glance. 6 in a pack, extra batteries, easy set up, great price. I've checked it against two other thermometers that are accurate. One of my aquariums is glass, and the other two are plastic. Place it on your aquarium and you are good to go. My poor fish was in 86 degrees water for a month.

  • Amer Thermal Instruments Liquid Crystal Vertical Aquarium Thermometer, Small
  • Liquid Crystal Vertical Aquarium Thermometer. Miscellaneous Aquarium
  • Manufacturer: AMERICAN THERMAL
  • Manufacturer part number: A-1003
  • Manufacture: Unique Cell Distributors LLC
  • Product Dimensions: 4 x 0.5 x 7 inches; 0.08 Ounces
  • Editor's Impressions Of The Amer Thermal Instruments BC002021
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Amer Thermal Instruments BC002021 Final Thoughts

"Overall a great buy."

And is easily hidden behind a plant. I came here to give this product a positive review. At least in the first 3 months of use. Excellent working for our bearded dragon tank. The digital display itself is easy to read at a glance. Simple fix, you adjust the thermometer within the suction cup and VIOLA! So much so that I purchased a second set of 6.

Overall Score
4.4


(69 Points)

6. 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
  • Quality
  • Value For Money
  • Affordability

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


(1 Points)

7. KORDON #39844 Rid Fungus for Aquarium, 4-Ounce

User Ratings: 52 26

Kordon MODEL-39844 First Impressions

"9, and 78."

This little wonder allows me to see at a glance that everything is as it should be. So far, they're all doing their job in my four tanks and I am quite content. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. The only reason I didn't give this 5 stars is because my betta fish didn't like it. The digital display is nice and small as well. So, in those cases, I find it easier to simply replace it. Set all six probes up in a terrarium with a constant temp of 88.

  • KORDON #39844 Rid Fungus for Aquarium, 4-Ounce
  • Kordon rid fungus 4oz
  • Kordon prevent ich is a strong preventative
  • Also serves as an effective external treatment of protozoans, din flagellates and fungi
  • Manufacture: KORDON LLC
  • Product Dimensions: 0.02 x 0.02 x 0.02 inches; 0.32 Ounces
  • Editor's Impressions Of The Kordon MODEL-39844
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Kordon MODEL-39844 Final Thoughts

"Fish are doing very well."

You dont HAVE to stick the display onto your tank. Works well in my betta tank, but provide a couple hours for it to read temp changes. I have mine on my 60 gallon cube marine tank. You can not swivle the thermometer to face a certain way. I'm pretty sure those reviewers have acrylic tanks. I used to have a large hang in the side tank that you couldn't miss. My 50+ eyes cannot read a regular tank thermometer without squinting.

Overall Score
3.5


(6 Points)

8. 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)

9. GuDoQi Aquarium Thermometers, 4 Pack Digital Water Thermometer with Suction Cup for Fish Tank, Aquar...

User Ratings: 62 7

GuDoQi First Impressions

"Doing the math."

The lid is textured aluminum, and the suction cups don't stick to that. For something so cheap, they are working remarkably well. The plastic from the suction cup quickly turned from a clear to a milky white. I have kept aquariums for about 45 years. As you can see from my photos, in both°F and°C, all six are within. This little wonder allows me to see at a glance that everything is as it should be. I can't say which is the most accurate and don't really care.

  • GuDoQi Aquarium Thermometers, 4 Pack Digital Water Thermometer with Suction Cup for Fish Tank, Aquarium, Marine Reptile Habitat Temperature
  • Function: Digital thermometer for aquarium
  • Easy to install: Suction base, easy to install
  • LCD screen: a simple appearance and a easy to read LCD display
  • Durable materials: Ideal for use in refrigerators, chillers and deep freezes, the thermometer has a range of -50 degree to + 70 degree
  • Portable: Light weight, small size easy to carry
  • Manufacture: QBY
  • Item Weight: 1.41 ounces
  • Product Dimensions: 2.28 x 1.46 x 0.67 inches
  • Batteries: 1 Lithium Metal batteries required. (included)
  • Editor's Impressions Of The GuDoQi
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

GuDoQi Final Thoughts

"It's accurate I tell you."

They are within a degree or two of other thermometers I've checked to compare them. If the digital display starts to get dim, it's time for a new battery. I use a small flashlight if I don't want to brighten the area. I did have a problem with one in my first pack of 6. He acted aggressively towards it and so I ultimate ended up removing it due to that. 82 PER THERMOMETER with battery included. Then she followed up again on that, asking if they had arrived and were okay.

Overall Score
4.2


(124 Points)

10. CAMWAY 2pcs Aquarium Thermometer Fish Tank Temperature Hygrometer Thermometer

User Ratings: 46 16

CAMWAY First Impressions

"No issues."

I had my heater set at 73-degrees and the thermometers showed 74. This little wonder allows me to see at a glance that everything is as it should be. I use a small flashlight if I don't want to brighten the area. You dont HAVE to stick the display onto your tank. Personally I do not mind the way it looks in my aquarium. I got root rot after light leaks and high water temps. A battery can last you up to six months, I'd say, but expect more like three.

  • CAMWAY 2pcs Aquarium Thermometer Fish Tank Temperature Hygrometer Thermometer
  • 2-Pack Aquarium Thermometer can show temperature, humidity and time.
  • You can choose seither Fahrenheit or Celsius according to your need.
  • Temperature range -50 degree Celsius ~+ 70 degree Celsius,This aquarium thermometer is accurate to +/- 1℃.
  • 12-hour / 24-hour format and alarm clock function.The Large LCD display unit is easy to read,Small volume, large function.
  • Submerge probe into fish tank to measure water temperature.
  • Equipped With a 1.5M Probe Cable,Submerge Probe Into Fish Tank to Measure Water Temperature. It’s More Convenient for Detecting.
  • 2 x Aquarium Thermometers
  • 2 x Batteries
  • Manufacture: CAMWAY
  • Batteries: 2 AAA batteries required. (included)
  • Editor's Impressions Of The CAMWAY
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

CAMWAY Final Thoughts

"Easy set up."

In this scenario it would probably get knocked loose a lot. The suction will never be the same. I recommend gluing the suction cups in place where needed for long-term installation. This is my first 5 star review out of many many reviews on Amazon. Since adding one of these, it has been much easier to monitor the temp of my tanks. The extra batteries where very much appreciated and came in handy. They are within a degree or two of other thermometers I've checked to compare them.

Overall Score
3.7


(14 Points)

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