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. Lomodo 16 Pack Floating Thermometer Aquarium Glass Temperature Gauge with Suction Cup for Fish Tank ...

User Ratings: 42 15

Lomodo First Impressions

"Works well!"

All were Close enough for a fish tank and other uses. I used these on a number of my aquariums that have discus fish in them. I don't think i'll ever be able to trust a digital thermometer again. SIX Digital Thermometers with SIX batteries INCLUDED working so well. I tested this in a cup crammed full of ice and some water. The display can be set to Fahrenheit or Celsius. I am extremely pleased with this product.

  • Lomodo 16 Pack Floating Thermometer Aquarium Glass Temperature Gauge with Suction Cup for Fish Tank (0-40℃/40-100℉)
  • You will get large quantities of 16 pack floating thermometer, enough for several aquariums
  • Made of clear glass tube and PVC suction cup, good quality and durable, packaged in blister, providing from breaking during transportation
  • Red indicator line let you read the temperature quickly and easily, temperature ranges from 0-40℃/40-100℉
  • Come with suction cup, which can suck the aquariums wall tightly
  • Widely application: you can put it in your pool, pond, fish tank, aquariums, etc
  • Manufacture: Lomodo
  • Product Dimensions: 6.3 x 2.56 x 1.02 inches; 10.62 Ounces
  • Editor's Impressions Of The Lomodo
  • Thermometer Accuracy [star rating='3.9']
  • Quality [star rating='3']
  • Value For Money [star rating='2.6']
  • Affordability [star rating='4.1']

Lomodo Final Thoughts

"So far loving it."

Personally I do not mind the way it looks in my aquarium. Simple fix, you adjust the thermometer within the suction cup and VIOLA! 89 I could buy Six Thermometers with Six included batteries. Personally I do not mind the way it looks in my aquarium. The plastic from the suction cup quickly turned from a clear to a milky white. So far, they're all doing their job in my four tanks and I am quite content. You can use the thermometer with or without the plastic suction cup.

Overall Score
3.6

[star rating="3.6"]
(3 Points)

5. Veanic 4-Pack Digital Aquarium Fish Tank Thermometer Terrarium Water Temperature Meter Gauge with Wa...

Veanic First Impressions

"Fish are doing very well."

This is my first 5 star review out of many many reviews on Amazon. As you can see from my photos, in both°F and°C, all six are within. Only thing I don't love is how long the cord is. He acted aggressively towards it and so I ultimate ended up removing it due to that. 49 thermometer that is 100% accurate. My only complaint is that they tend to be a one time use. I used to have a large hang in the side tank that you couldn't miss.

  • Veanic 4-Pack Digital Aquarium Fish Tank Thermometer Terrarium Water Temperature Meter Gauge with Water-Resistant Sensor Probe for Reptile Turtle Incubators
  • The digital aquarium thermometer helps you accurately monitor the temperature of your aquatic habitat; suitable for freshwater or marine aquariums.
  • The digital thermometer combins a water-resistant sensor probe, you can accurately and quickly monitor the temperature of your terrarium.
  • This digital thermometer with 3 ft insulated wire, can switch between celsius(℃) and fahrenheit (℉) .
  • Temperature measuring range: -58℉-158℉(-10℃-70℃ ); Temperature measurement accuracy: ±2℉(±1℃).
  • Perfect to use in brooders, reptile tank, hamster cages,aquarium, fish tank, pet keeping, gardening and other places where you want.
  • Manufacture: Veanic
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The Veanic
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='4.9']
  • Affordability [star rating='5']

Veanic Final Thoughts

"Highly Recommended."

I don't think i'll ever be able to trust a digital thermometer again. If the digital display starts to get dim, it's time for a new battery. I got root rot after light leaks and high water temps. I find that the temps are accurate, and this product gives added peace of mind. I guess these units do not like saltwater. I bought these for my dwc reservoirs. I recommend gluing the suction cups in place where needed for long-term installation.

Overall Score
5.0

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

6. 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)

7. 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']

Amercan Thermal BC002004 Final Thoughts

"6 tenths of a degree."

I ordered this guy and it was 6 degrees hotter than the digital! All are pretty accurate within one degree as claimed. Bought the two pack of thermometers. Far more accurate than the usual small glass ones or external LCD strips. This company is taking the long term view of how to do business right. My poor fish was in 86 degrees water for a month. They are within a degree or two of other thermometers I've checked to compare them.

Overall Score
4.3

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

8. Decdeal TPM10 Aquarium Thermometer Instant Read Digital Fish Tank Water Temperature Measurement Tool...

Decdeal First Impressions

"It works great."

The temperature fluctuated a lot with it. I used these on a number of my aquariums that have discus fish in them. I used these on a number of my aquariums that have discus fish in them. Far more accurate than the usual small glass ones or external LCD strips. You dont HAVE to stick the display onto your tank. When and if we run out of this batch, I'll instantly order another batch. I use a small flashlight if I don't want to brighten the area.

  • Decdeal TPM10 Aquarium Thermometer Instant Read Digital Fish Tank Water Temperature Measurement Tool with Waterproof Probe LED Display Gauge
  • Mini size and very light in weight.
  • Fast reading system achieves an accurate temperature reading within just a few seconds.
  • Ultra-clear screen LCD display showing temperature unit of Celsius.
  • With 1m cable metal sensor, it is perfect for use in refrigerator, aquarium tank, fish tank, pet cage, etc.
  • The metal probe is waterproof, you can just drop it into your fish tank.
  • Manufacture: Decdeal
  • Item Weight: 1.22 ounces
  • Editor's Impressions Of The Decdeal
  • Thermometer Accuracy [star rating='5']
  • Quality [star rating='4.8']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='3.9']

Decdeal Final Thoughts

"No complaints."

Was going to get a floater until I saw this magnetic one! One extra battery came with each unit. Now if it falls into a sink full of water, it's not a problem. I bought these for my dwc reservoirs. I have it in both my aquariums now. Sure enough the digital thermometer was way off by 6 degrees! This temperature read a perfect 32 degrees.

Overall Score
4.0

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

9. VIVOSUN 4-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature with Suction C...

User Ratings: 69 3

VIVOSUN First Impressions

"Appears to be accurate."

This is how you calibrate a thermometer. So much easier than the ones that hang on the inside. It is about 6 inches in length and roughly an inch wide. I used these on a number of my aquariums that have discus fish in them. In the right situation this magnet thermometer is the best available. I just wrote it off as a minor loss. Ambient room temperature measures 72.

  • VIVOSUN 4-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature with Suction Cup for Turtle
  • HIGH ACCURACY: Temperature Range: -50℃ ~ +70℃ (-58 °F ~ +158 °F); This aquarium thermometer is accurate to +/- 1℃, no matter whether the probe is placed in any corner of this fish tank, an accurate temperature will be displayed
  • LCD DISPLAY: Comes with a large LCD display that is easy to read clearly and accurately
  • ADJUSTABLE UNIT TEMPERATURE: Easy to adjust the temp between Fahrenheit and Celsius displays; Long-press the power button to adjust the unit display
  • TWO SUCTION CUPS: Equipped with two suction cups, one for attaching the cable to the side of the tank and another for attaching the thermometer
  • SUPER LONG CABLE: The cable length connected to the probe is 78.74 inch (2 m) superior to 23.62 inch (60 cm) standard cable length; Allows accurate temperature measurements in even the largest fish tanks
  • 1. Open the battery cover on the back of this thermometer and insert the button battery to ensure the “+” positive electrode is face up;
  • 2. Use one suction cup to attach the back of this thermometer, then fix this unit to the outer of this fish tank, another suction cup is for attaching the cable;
  • 3. Submerge the probe attached cable into the fish tank;
  • Manufacture: VIVOSUN
  • Editor's Impressions Of The VIVOSUN
  • Thermometer Accuracy [star rating='3.7']
  • Quality [star rating='3.8']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='4.7']

VIVOSUN Final Thoughts

"These are great!"

50 thermometers, reads much easier and no suction cup residue, also looks better. The digital display itself is easy to read at a glance. So far I've been very thrilled with these. They reviewed the packaging or shipping by saying it arrived broken. It is about 6 inches in length and roughly an inch wide. The suction cups work well anywhere I have placed it it has not Fallen. I'm pretty sure those reviewers have acrylic tanks.

Overall Score
4.5

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

10. Honbay 6PCS Adhesive Crystal Digital Temperature Strips Stickers for Fish Tank Water Cup

User Ratings: 70

HONBAY First Impressions

"Never had any problems."

I did have a problem with one in my first pack of 6. For the price I'll probably end up putting these in all of my aquariums. You can not swivle the thermometer to face a certain way. One of my aquariums is glass, and the other two are plastic. It is always where yo last put it and it is very easy to see and read. Simple fix, you adjust the thermometer within the suction cup and VIOLA! Very accurate, have checked it with other thermometers as well.

  • Honbay 6PCS Adhesive Crystal Digital Temperature Strips Stickers for Fish Tank Water Cup
  • Package includes: 6PCS Stick-on Digital Thermometer Strips
  • Material:Plastic
  • Capacity: 13*1.8cm/5.12*0.71inch
  • Perfect for wine bottles, baby bottles, fish tanks, bath water and more, but it can't be used in the environment above 50 ℃.
  • 3 different color, green color represents current temperature, blue color represents a bit lower temperature, brown color represents a bit higher temperature.
  • Manufacture: Honbay
  • Editor's Impressions Of The HONBAY
  • Thermometer Accuracy [star rating='3.5']
  • Quality [star rating='4.2']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='4.4']

HONBAY Final Thoughts

"Fast accurate readings."

The suction will never be the same. He was moving slow in the winter and we realized he needed a heater! 6F all six took about three minutes to read between 88. It started working as soon as I put it in and has been working ever since. Instead she sent a new package of two, both of which work. For something so cheap, they are working remarkably well. He was moving slow in the winter and we realized he needed a heater!

Overall Score
4.4

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

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