Editor's Choice - Our Favorite LCR Hallcrest Aquarium Thermometers

1. LCR Hallcrest A-1005 Liquid Crystal Vertical Aquarium Thermometer

User Ratings: 78 4

LCR Hallcrest A-1005 First Impressions

"It's accurate I tell you."

I removed the batteries of the units I wasn't using right away. I guess these units do not like saltwater. Now that the chickens are grown, I have one out in the coop as well. Checked with temp gun and the terrarium was on target at 88. I used these to raise chicks, and in my parrot cages. This is my first 5 star review out of many many reviews on Amazon. My poor fish was in 86 degrees water for a month.

  • LCR Hallcrest A-1005 Liquid Crystal Vertical 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; 0.32 Ounces
  • Editor's Impressions Of The LCR Hallcrest A-1005
  • Thermometer Accuracy [star rating='4']
  • Quality [star rating='3.6']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='5']

LCR Hallcrest A-1005 Final Thoughts

"Drop in the probe."

So much so that I purchased a second set of 6. A bit large for anything smaller than 5 gallons, but that's to be expected. You can glue, tape or simply cover the cords in the tank to keep them discreet. I used these to raise chicks, and in my parrot cages. So much easier than the ones that hang on the inside. 6F all six took about three minutes to read between 88. It is large enough to see without being obtrusive.

Overall Score
4.6

[star rating="4.6"]
(794 Points)

Peoples Choice - Other Highly Rated LCR Hallcrest Aquarium Thermometers

2. 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']

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

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

3. Vertical Aquarium Thermometer Mini

User Ratings: 77

LCR Hallcrest DPP30961 First Impressions

"Holds a steady 1."

6F all six took about three minutes to read between 88. My poor fish was in 86 degrees water for a month. I recommend gluing the suction cups in place where needed for long-term installation. 2 deg, if it was 32, it would be a SOLID block of ice. You can use the thermometer with or without the plastic suction cup. Water tested with Autidefy brand for two hours. Excellent working for our bearded dragon tank.

  • Vertical Aquarium Thermometer Mini
  • 5 mil thickness
  • 3 inch X 1 inch dimensions
  • Vertically mounted
  • Fahrenheit scale
  • Manufacture: LCR Hallcrest
  • Editor's Impressions Of The LCR Hallcrest DPP30961
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4']

LCR Hallcrest DPP30961 Final Thoughts

"Very accurate."

Place it on your aquarium and you are good to go. At least in the first 3 months of use. Still a recommendation for me due to price and accuracy. You dont HAVE to stick the display onto your tank. In this scenario it would probably get knocked loose a lot. I removed the batteries of the units I wasn't using right away. I tested this in a cup crammed full of ice and some water.

Overall Score
4.8

[star rating="4.8"]
(5 Points)

4. Imagitarium Aquarium Strip Thermometer, Small

User Ratings: 39

Imagitarium THM-008 First Impressions

"Super easy."

The extra batteries where very much appreciated and came in handy. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Set all six probes up in a terrarium with a constant temp of 88. The non-working ones still provide 2 batteries each AND. I use a small flashlight if I don't want to brighten the area. Was going to get a floater until I saw this magnetic one! I tested this in a cup crammed full of ice and some water.

  • Imagitarium Aquarium Strip Thermometer, Small
  • Aquarium Strip Thermometer from Imagitarium
  • Adheres to the outside of glass or acrylic fish tanks for an easy and secure instillation
  • Measures in Celsius and Fahrenheit
  • Uses easy-to-read measurements
  • Ideal for freshwater or saltwater fish tanks
  • Manufacture: Imagitarium
  • Item Weight: 0.32 ounces
  • Editor's Impressions Of The Imagitarium THM-008
  • Thermometer Accuracy [star rating='4.2']
  • Quality [star rating='4.4']
  • Value For Money [star rating='3']
  • Affordability [star rating='4.1']

Imagitarium THM-008 Final Thoughts

"I opened the first three."

The display can be set to Fahrenheit or Celsius. I have to admit I had two reasons for buying six. And I just really started to doubt it. The only reason I didn't give this 5 stars is because my betta fish didn't like it. If the digital display starts to get dim, it's time for a new battery. Since it is a mercury thermometer, it is very accurate. Checked with temp gun and the terrarium was on target at 88.

Overall Score
4.0

[star rating="4"]
(3 Points)

5. Petyoung 2-in-1 Digital LCD Embedded Thermometer Hygrometer Temperature Monitor with External Probe ...

User Ratings: 50

Petyoung 1330990/120337AM16UK2AQW First Impressions

"Love this product!"

I can't say which is the most accurate and don't really care. So this is the extreme end of the high temperature range. However, Lucy at Zacro read this review and emailed me. The suction will never be the same. Since it is a mercury thermometer, it is very accurate. Since it is a mercury thermometer, it is very accurate. I find that the temps are accurate, and this product gives added peace of mind.

  • Petyoung 2-in-1 Digital LCD Embedded Thermometer Hygrometer Temperature Monitor with External Probe Reptile Incubator Aquarium Poultry
  • 1. Mini thermometer hygrometer, allows you easily and fast to know the environment temperature and humidity.
  • 2. It can measure the humidity in the range of 10%-99%, and temperature from -50℃ to 70℃ precisely, offering a comfortable living surrounding for your pet or reptiles.
  • 3. Integrated the thermometer and hygrometer in one meter, convenient to use.
  • 4. LCD digital screen displays the number clearly for easy reading.
  • 5. Perfect to use in incubators, brooders, cigar room, reptile tank, aquarium, fish tank and other places where you want.
  • Manufacture: Petyoung
  • Product Dimensions: 4.72 x 2.36 x 1.18 inches; 1.41 Ounces
  • Editor's Impressions Of The Petyoung 1330990/120337AM16UK2AQW
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.1']

Petyoung 1330990/120337AM16UK2AQW Final Thoughts

"I like the product."

However, Lucy at Zacro read this review and emailed me. I bought these for my dwc reservoirs. In the right situation this magnet thermometer is the best available. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. Only thing I don't love is how long the cord is. The digital display is nice and small as well.

Overall Score
4.5

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

6. LANDUM Digital Aquarium Tank Fish Thermometer Temperature Sticker Dual Scale 1 Piece

LANDUM First Impressions

"Drop in the probe."

2 deg, if it was 32, it would be a SOLID block of ice. Excellent working for our bearded dragon tank. 82 PER THERMOMETER with battery included. I got root rot after light leaks and high water temps. The only reason I didn't give this 5 stars is because my betta fish didn't like it. A battery can last you up to six months, I'd say, but expect more like three. The lid is textured aluminum, and the suction cups don't stick to that.

  • LANDUM Digital Aquarium Tank Fish Thermometer Temperature Sticker Dual Scale 1 Piece
  • Application: Measure the temperature of your fish tank, your DIY Brew Beer and wine barrel, Terrarium, Greenhouse, Vivarium and any sort of pet tank, or any place in your house
  • Quality Workmanship: Made of high quality PET material, non toxic, safe and durable
  • Advantage: The right water temperature is very important for the health of your fish, get your beer and wine right or use in kitchen or around the home to monitor temperature
  • Special Design: Easy to install, just peel off the back of the sticker and the transparent protective film at the front and stick it on the outside wall of the aquarium, that is it.
  • Package Include: 1Piece x Aquarium Fish Tank Thermometer
  • Manufacture: LANDUM
  • Editor's Impressions Of The LANDUM
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.8']

LANDUM Final Thoughts

"Would buy again."

I have it in both my aquariums now. At least in the first 3 months of use. The display can be set to Fahrenheit or Celsius. I use a small flashlight if I don't want to brighten the area. I used these on a number of my aquariums that have discus fish in them. It is my opinion that everyone should have these that are in the Aquarium Hobby. The suction cups work well anywhere I have placed it it has not Fallen.

Overall Score
5.0

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

7. 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']

JARDIN a12081700ux0929 Final Thoughts

"Disappointed."

A battery can last you up to six months, I'd say, but expect more like three. Only thing I don't love is how long the cord is. Excellent working for our bearded dragon tank. He acted aggressively towards it and so I ultimate ended up removing it due to that. Who knows, whatever it was, it was revolting! The display can be set to Fahrenheit or Celsius. These are the perfect size to be easily read while not being obtrusive.

Overall Score
4.2

[star rating="4.2"]
(10 Points)

8. 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 [star rating='3.1']
  • Quality [star rating='3.2']
  • Value For Money [star rating='3.2']
  • Affordability [star rating='4.8']

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

[star rating="4"]
(1 Points)

9. Marina Stainless Steel Thermometer

User Ratings: 51 11

Marina 11203A1 First Impressions

"6 tenths of a degree."

82 PER THERMOMETER with battery included. I have kept aquariums for about 45 years. And for the price you cant beat it. You can not swivle the thermometer to face a certain way. Have checked them against the glass thermometers and the accuracy is right on. I needed a solution that was not breakable and these do the trick! Was going to get a floater until I saw this magnetic one!

  • Marina Stainless Steel Thermometer
  • Easy-to-read stainless steel thermometer
  • Includes a safety zone indicator. Safety zone Indicator for Most Tropical fish
  • Ensures your aquarium is at a proper temperature. Protects your Fish from Unsafe Temperature
  • Hooks onto the side of your aquarium
  • 4.5 inches tall
  • Manufacture: Marina
  • Product Dimensions: 0.9 x 3.9 x 7 inches; 0.64 Ounces
  • Editor's Impressions Of The Marina 11203A1
  • Thermometer Accuracy [star rating='3.8']
  • Quality [star rating='4.2']
  • Value For Money [star rating='4.4']
  • Affordability [star rating='3.5']

Marina 11203A1 Final Thoughts

"Currently maintains a 76."

All were Close enough for a fish tank and other uses. The lid is textured aluminum, and the suction cups don't stick to that. The suction cups work well anywhere I have placed it it has not Fallen. It works equally well on all of them. Still a recommendation for me due to price and accuracy. So the extra units will always come in handy. My only complaint is that they tend to be a one time use.

Overall Score
4.0

[star rating="4"]
(251 Points)

10. Qooltek Digital LCD Thermometer Temperature Gauge Aquarium Thermometer with Probe for Vehicle Reptil...

User Ratings: 69 5

Qooltek First Impressions

"They all were within."

The lid is textured aluminum, and the suction cups don't stick to that. Only thing I don't love is how long the cord is. Simple fix, you adjust the thermometer within the suction cup and VIOLA! I have mine on my 60 gallon cube marine tank. You can not swivle the thermometer to face a certain way. I recommend gluing the suction cups in place where needed for long-term installation. So versatile, I can read the temperatures literally anywhere.

  • Qooltek Digital LCD Thermometer Temperature Gauge Aquarium Thermometer with Probe for Vehicle Reptile Terrarium Fish Tank Refrigerator(Fahrenheit)
  • Remote wired probe can read temperature up to 3.3 feet away
  • Temperature range: -58°F~ +199°F
  • Designed to be embedded or can be surface mounted
  • Battery Operated (included) (Aprox 2 year battery life)Size 1"x1.75"
  • Mounting Hole Size 1"x 1.75" (0.5" deep).
  • Manufacture: Qooltek
  • Part Number: 050-004
  • Material: Plastic + LCD
  • Item Weight: 0.81 ounces
  • Product Dimensions: 1.18 x 0.59 x 1.97 inches
  • Color: Black
  • Batteries: 2 LR44 batteries required. (included)
  • Power Source: Battery Powered
  • Batteries Included?: Yes
  • Batteries Required?: Yes
  • Editor's Impressions Of The Qooltek
  • Thermometer Accuracy [star rating='4.1']
  • Quality [star rating='3.9']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='5']

Qooltek Final Thoughts

"So we are ordering more."

6 inch long Bala Sharks that are known to be very unruly and boisterous. This is how you calibrate a thermometer. So far, they're all doing their job in my four tanks and I am quite content. This company is taking the long term view of how to do business right. All were Close enough for a fish tank and other uses. In this scenario it would probably get knocked loose a lot. I recommend gluing the suction cups in place where needed for long-term installation.

Overall Score
4.4

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

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