Editor's Choice - Our Favorite Carolina Biological Supply Company Aquarium Thermometers
1. Thermometer, LCD, Sticks on Outside of Aquarium Tank
User Ratings: 55 45
Carolina Biological Supply Company First Impressions
"It sticks very firmly."I got root rot after light leaks and high water temps. Good cheap accurate aquarium thermometer. I can't say which is the most accurate and don't really care. At least in the first 3 months of use. So far I've been very thrilled with these. In the right situation this magnet thermometer is the best available. My poor fish was in 86 degrees water for a month.
- Thermometer, LCD, Sticks on Outside of Aquarium Tank
- A stick-on thermometer that mounts on outside of tank.
- The Carolina Pledge: 100% Satisfaction Guaranteed. All of our products are unconditionally guaranteed. If for any reason you are not satisfied with any item, you may return it for a replacement, a refund, or credit. It's that simple.
- From our beginnings in 1927, Carolina Biological Supply Company has grown to become a leading supplier of science teaching materials for all levels of education. Today, from our headquarters in Burlington, North Carolina, we serve customers worldwide, including teachers, professors, homeschool educators, hobbyists, and professionals in health and science-related fields.
- When you shop with Carolina, you're not alone! All of our products are backed by unparalleled technical support, available from 8am to 8pm, ET, Monday-Friday. Contact information (Live Chat, email, and phone) is provided after placing your order at Amazon.
- Manufacture: Carolina Biological Supply Company
- Editor's Impressions Of The Carolina Biological Supply Company
- Thermometer Accuracy [star rating='2.2']
- Quality [star rating='2.9']
- Value For Money [star rating='3.4']
- Affordability [star rating='2.7']
Carolina Biological Supply Company Final Thoughts
"Exactly what I needed."Very accurate, have checked it with other thermometers as well. 6 inch long Bala Sharks that are known to be very unruly and boisterous. I've checked it against two other thermometers that are accurate. I needed a solution that was not breakable and these do the trick! So far I've been very thrilled with these. So the extra units will always come in handy. So this is the extreme end of the high temperature range.
Overall Score
3.2
(2 Points)
Here Are Some Other Related Aquarium Thermometers
2. Ade Advanced Optics Dual Scale 1.0 to 1.070 S.G. Salinity Refractometer for Aquarium & Seawater
User Ratings: 75 5
Ade Advanced Optics SSA0010 First Impressions
"I like these."The suction works for a month at a time- in pool and hot tub circulation. You can glue, tape or simply cover the cords in the tank to keep them discreet. I used these on a number of my aquariums that have discus fish in them. The units each had a battery in place and situated for immediate use. I have kept aquariums for about 45 years. I use a small flashlight if I don't want to brighten the area. The non-working ones still provide 2 batteries each AND.
- Ade Advanced Optics Dual Scale 1.0 to 1.070 S.G. Salinity Refractometer for Aquarium & Seawater
- One scale checks the NaCl levels with the range of 0-100 ppt (with 1 ppt scale divisions) and the other scale gauges Specific Gravity with a range of 1.000 to 1.070(+/-0.001 accuracy)
- Features ATC (Automatic Temperature Compensation) for accurate readings.
- Sturdy design, compact in size and light in weight, convenient to keep up and carry around.
- It is suitable for a marine saltwater tank.
- This Refractometer is backed by a 2 Year - No Hassle - Free Replacement Guarantee.
- Manufacture: Ade Advanced Optics
- Product Dimensions: 2 x 2 x 7 inches; 6.4 Ounces
- Editor's Impressions Of The Ade Advanced Optics SSA0010
- Thermometer Accuracy [star rating='4.2']
- Quality [star rating='4.7']
- Value For Money [star rating='4.7']
- Affordability [star rating='5']
Ade Advanced Optics SSA0010 Final Thoughts
"Works perfect."My 50+ eyes cannot read a regular tank thermometer without squinting. Since it is a mercury thermometer, it is very accurate. I ordered this guy and it was 6 degrees hotter than the digital! It is my opinion that everyone should have these that are in the Aquarium Hobby. The non-working ones still provide 2 batteries each AND. For the price I'll probably end up putting these in all of my aquariums. I tested this in a cup crammed full of ice and some water.
Overall Score
4.5
(854 Points)
3. Dimart Boyu Bt-08 Premium Aquarium Digital Thermometer Digital Thermostat Oven Thermometer Thermosta...
Dimart First Impressions
"Exactly what I needed."Put them all in the same tank and they read very close to each other. Since it is a mercury thermometer, it is very accurate. The units each had a battery in place and situated for immediate use. I had my heater set at 73-degrees and the thermometers showed 74. I ordered a new one and it works GREAT! Since adding one of these, it has been much easier to monitor the temp of my tanks. Have checked them against the glass thermometers and the accuracy is right on.
- Dimart Boyu Bt-08 Premium Aquarium Digital Thermometer Digital Thermostat Oven Thermometer Thermostat Thermometer with Probe Vehicle Fish Tank Aquarium Refrigerator Embedded (Black)
- Wireless with integrated probe for easy use.
- Ideal for Aquarium or terrarium temperature monitoring
- Easy-to-read LCD displays temperature in Fahrenheit or Celsius
- Enjoy convenient monitoring of parameters essential to Fish and reptile health
- Best choice for your home fish tank & aquariums.
- Manufacture: Dimart
- Editor's Impressions Of The Dimart
- Thermometer Accuracy [star rating='5']
- Quality [star rating='5']
- Value For Money [star rating='5']
- Affordability [star rating='5']
Dimart Final Thoughts
"Currently maintains a 76."I just wrote it off as a minor loss. In this scenario it would probably get knocked loose a lot. I am extremely pleased with this product. 50 thermometers, reads much easier and no suction cup residue, also looks better. Then she followed up again on that, asking if they had arrived and were okay. So, in those cases, I find it easier to simply replace it. So far I've been very thrilled with these.
Overall Score
5.0
(2 Points)
4. SunGrow Digital pH and TDS Meter Set, Accurate Readings, Easy to Read LCD Screen, Monitor Aquarium, ...
User Ratings: 57 6
SunGrow First Impressions
"Great product!"This thermometer is spot on accurate. 50 thermometers, reads much easier and no suction cup residue, also looks better. I just wrote it off as a minor loss. Checked with temp gun and the terrarium was on target at 88. I bent it a little bit and when I put it back it was perfectly fine. I think the people who said the suction cup broke. Set all six probes up in a terrarium with a constant temp of 88.
- SunGrow Digital pH and TDS Meter Set, Accurate Readings, Easy to Read LCD Screen, Monitor Aquarium, Fruit, Tap Water, Pool Water, 4 LR44 Batteries Included
- ✔ TWO-IN-ONE SOLUTION --- This Ph and TDS combo meter by SunGrow will give you the best of both worlds in one device. This SunGrow pack includes electrodes and components needed to test both the pH and TDS of any water solution. It’s easy to use and less equipment to deal with than two separate devices.
- ✔ ENERGY-SAVING, LIGHTWEIGHT AND PORTABLE DEVICES--- This PH and TDS meter has a handheld pen-type design that weighs barely 1.7 oz making it lightweight and portable. It comes with a handy case that you can easily slip into a backpack or work bag if you need to bring it with you. The meter shuts off automatically after 10-minutes of non-use to conserve batteries. (BATTERIES INCLUDED)
- ✔ CALIBRATION SCREWDRIVER INCLUDED --- These meters have been factory-calibrated and are designed to stay consistent. However, if you need to recalibrate your meter from time to time or you want to calibrate for different applications, you can use the screwdriver calibration tool included for continued accurate readings of your water. The TDS meter is most accurate when calibrated as close as possible to the sample to be tested.
- ✔ HIGHLY ACCURATE READINGS --- This pH and TDS professional level water test meter precisely measures and monitors the levels in your aquarium or other liquid solutions. The SunGrow pH and TDS meter will give you extremely accurate readings of the ph levels and Total Dissolved Solid within ± 2% range.
- ✔ MULTI-USE MEASURING TOOL--- This little tool is a valuable instrument for keeping a tab on various bodies of water. You can use it to make sure the level in your freshwater or saltwater aquarium is optimal for your fish, test water in a laboratory or for the hydroponically grown vegetables. You can also test the swimming pool, tap water, and spa water.
- Manufacture: Luffy Pets Collection
- Editor's Impressions Of The SunGrow
- Thermometer Accuracy [star rating='3.7']
- Quality [star rating='4.6']
- Value For Money [star rating='5']
- Affordability [star rating='5']
SunGrow Final Thoughts
"Easy to setup in tank."When I set up my newest tank I will be getting another one of these. My 50+ eyes cannot read a regular tank thermometer without squinting. Love it, it's easy to read and keeps an accurate temp. I used to have a large hang in the side tank that you couldn't miss. It will make you wonder why nobody thought of it before. Bought the two pack of thermometers. Place it on your aquarium and you are good to go.
Overall Score
4.2
(44 Points)
5. Marina ThermoSensor In-Out Thermometer
User Ratings: 47 15
Marina 11196 First Impressions
"1 degree of each other."Have checked them against the glass thermometers and the accuracy is right on. The non-working ones still provide 2 batteries each AND. I guess these units do not like saltwater. I have mine on my 60 gallon cube marine tank. It is about 6 inches in length and roughly an inch wide. This is my first 5 star review out of many many reviews on Amazon. You can use the thermometer with or without the plastic suction cup.
- Marina ThermoSensor In-Out Thermometer
- Provides both inside and outside aquarium temperature readings
- Accurate, easy-to-read digital display
- Can be attached anywhere on the aquarium
- Velcro mount for easy installation; Battery included
- Contains temperature probe
- Manufacture: Marina
- Product Dimensions: 0.75 x 3 x 1.5 inches; 1.44 Ounces
- Batteries: 2 LR44 batteries required. (included)
- Editor's Impressions Of The Marina 11196
- Thermometer Accuracy [star rating='3.8']
- Quality [star rating='2.9']
- Value For Money [star rating='3.4']
- Affordability [star rating='4.6']
Marina 11196 Final Thoughts
"Close enough I reckon!"So far, they're all doing their job in my four tanks and I am quite content. I removed the batteries of the units I wasn't using right away. So, in those cases, I find it easier to simply replace it. You can not swivle the thermometer to face a certain way. The temperature fluctuated a lot with it. I came here to give this product a positive review. I use a small flashlight if I don't want to brighten the area.
Overall Score
3.7
(66 Points)
6. Elitech SDT-1 Aquarium Thermometer with Sucker Fish Tank Thermometer Water Terrarium Temperature Sub...
User Ratings: 54 12
Elitech SDT-1 First Impressions
"Perfect customer service."6F all six took about three minutes to read between 88. I don't think i'll ever be able to trust a digital thermometer again. He acted aggressively towards it and so I ultimate ended up removing it due to that. Then she followed up again on that, asking if they had arrived and were okay. 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. Works well in my betta tank, but provide a couple hours for it to read temp changes.
- Elitech SDT-1 Aquarium Thermometer with Sucker Fish Tank Thermometer Water Terrarium Temperature Submersible LCD Digital Display Waterproof
- 【Completely Waterproof】Allows to submerge into the water, making water temperature measurement more accurate.
- 【Easy to Read】Large clear LCD screen, measures temperature from 32℉~122℉, accuracy up to ±2℉.
- 【Simple to Operate】Easy to install the suction cup to place the thermometer for the best spot and checks the temperature just with a glance.
- 【Durable】Powered by one LR44 battery. It is very long lasting and easy to replace.
- 【Widely Used】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, vivarium and any sort of pet tank thermometer. 24/7 US Technician Support via Email and Phone.
- Temperature measuring range: 0℃~50℃(32℉~122℉)
- Accuracy: ±1℃(±2℉)
- Operation environment: -10℃~50℃
- Manufacture: Elitech
- Product Dimensions: 2.91 x 1.02 x 5.2 inches; 0.18 Ounces
- Batteries: 2 CR123A batteries required. (included)
- Editor's Impressions Of The Elitech SDT-1
- Thermometer Accuracy [star rating='4.2']
- Quality [star rating='4.4']
- Value For Money [star rating='2.9']
- Affordability [star rating='3.2']
Elitech SDT-1 Final Thoughts
"8 C lower than this."It is about 6 inches in length and roughly an inch wide. 50 thermometers, reads much easier and no suction cup residue, also looks better. He acted aggressively towards it and so I ultimate ended up removing it due to that. I use a small flashlight if I don't want to brighten the area. I can't say which is the most accurate and don't really care. I have mine on my 60 gallon cube marine tank. You can use the thermometer with or without the plastic suction cup.
Overall Score
3.8
(11 Points)
7. JLENOVEG Digital Aquarium Thermometer Room Thermometer Mini LCD Digital Aquarium Thermometer for Fis...
User Ratings: 53
JLENOVEG First Impressions
"Great product!"6 inch long Bala Sharks that are known to be very unruly and boisterous. And is easily hidden behind a plant. For something so cheap, they are working remarkably well. Instead she sent a new package of two, both of which work. This temperature read a perfect 32 degrees. The non-working ones still provide 2 batteries each AND. It is easy to use and install it'disappears' in your tank it is so unobtrusive.
- JLENOVEG Digital Aquarium Thermometer Room Thermometer Mini LCD Digital Aquarium Thermometer for Fish Tank Aquarium Vivarium Amphibian Reptile Terrariums Temperature (Non Waterproof, NO Farenheight)
- Easy to stall: No sensor probe, just need to put the battery into the compartment. Sticking it to the water tank, the sensor sensed the temperature through the glass, or put it on your desk as a room thermometer.
- Wide Range & Accurate: Thermometer Working Range: 0~40℃ ; High accuracy (±1°C) to ensure the fish is healthy in a safe temperature or detect the function of the aquarium tools
- Easy to Read Aquarium thermometer: more large digital display, more clear with the bigger LCD. One LCD display one temperature, bright and clear the temperature to you.
- Multifunction digital thermometer: Ideal for aquariums & reptile habitats. For use with both freshwater & marine aquariums, and great for monitoring temperatures in reptile & amphibian terrariums, and small animal habitats.
- Multi-purpose thermometer, can be used as a aquarium thermometer, indoor thermometer and so on. Note: The thermometer can't be in the water.
- Manufacture: Poly
- Batteries: 1 LR44 batteries required. (included)
- Editor's Impressions Of The JLENOVEG
- Thermometer Accuracy [star rating='4.7']
- Quality [star rating='4.3']
- Value For Money [star rating='4.9']
- Affordability [star rating='4.3']
JLENOVEG Final Thoughts
"Really easy to hook up."The units each had a battery in place and situated for immediate use. Was going to get a floater until I saw this magnetic one! I find that the temps are accurate, and this product gives added peace of mind. This little wonder allows me to see at a glance that everything is as it should be. When I set up my newest tank I will be getting another one of these. My 50+ eyes cannot read a regular tank thermometer without squinting. 89 I could buy Six Thermometers with Six included batteries.
Overall Score
4.2
(12 Points)
8. Taam Stick On Thermometer Reads Between 64-93 Degrees F
User Ratings: 57 43
TAAM First Impressions
"Working wonderfully!"Place it on your aquarium and you are good to go. Now that the chickens are grown, I have one out in the coop as well. I used these on a number of my aquariums that have discus fish in them. Instead she sent a new package of two, both of which work. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. You dont HAVE to stick the display onto your tank. A battery can last you up to six months, I'd say, but expect more like three.
- Taam Stick On Thermometer Reads Between 64-93 Degrees F
- Display Temperature in Centigrade & Fahrenheit ★ 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.
- Simple Stick On ★ Simply pull the back sticker off and apply the adhesive side to the front of your fish tank/aquarium/carboy/jar/fermentation bucket or any surface. Great way to keep an eye on your fish tank/wine jar/kombucha temp.
- Easy To Read ★ The thermometer strip is temperature sensitive & splash proof. Colored marking shows the current reading temperature. If it shows multi-color in the strip, it's reading the temperature in between the numbers.
- The best kombucha brew temp is 78℉ to 85℉. Keep your betta’s water temperature between 78℉ to 80℉ for best result.
- 100% Satisfaction★ We aim to provide the highest quality service and the best product quality for each customer. Place your order without any worry. If you have any question, please feel free contact us. We will unconditionally solve for you!
- Manufacture: TAAM
- Product Dimensions: 0.02 x 0.02 x 0.02 inches; 0.16 Ounces
- Editor's Impressions Of The TAAM
- Thermometer Accuracy [star rating='4.2']
- Quality [star rating='4']
- Value For Money [star rating='3.9']
- Affordability [star rating='2.7']
TAAM Final Thoughts
"It is within."You can glue, tape or simply cover the cords in the tank to keep them discreet. I used to have a large hang in the side tank that you couldn't miss. I used to have a large hang in the side tank that you couldn't miss. Ambient room temperature measures 72. When I set up my newest tank I will be getting another one of these. Water tested with Autidefy brand for two hours. It started working as soon as I put it in and has been working ever since.
Overall Score
3.3
(5 Points)
9. Exo Terra Exo Terra Liquid Crystal Thermometer
User Ratings: 56 11
Exo Terra PT2455 First Impressions
"No complaints."I guess these units do not like saltwater. Only thing I don't love is how long the cord is. Since it is a mercury thermometer, it is very accurate. The non-working ones still provide 2 batteries each AND. Put them all in the same tank and they read very close to each other. We are using them to measure various temperatures inside and outside of a motorhome. In the right situation this magnet thermometer is the best available.
- Exo Terra Exo Terra Liquid Crystal Thermometer
- Liquid Crystal Thermometer
- Can be placed inside or outside the terrarium
- Wide range horizontal thermometer
- Easy to read and install
- Great for monitoring the temperature levels
- Manufacture: Exo Terra
- Product Dimensions: 0.2 x 3.3 x 7.2 inches; 0.32 Ounces
- Editor's Impressions Of The Exo Terra PT2455
- Thermometer Accuracy [star rating='4.4']
- Quality [star rating='4.2']
- Value For Money [star rating='3.1']
- Affordability [star rating='3.3']
Exo Terra PT2455 Final Thoughts
"Fish and me happy."However, Lucy at Zacro read this review and emailed me. The only reason I didn't give this 5 stars is because my betta fish didn't like it. I recommend gluing the suction cups in place where needed for long-term installation. It is my opinion that everyone should have these that are in the Aquarium Hobby. I got the second one as a bonus that I'm now using in my old tank. In the right situation this magnet thermometer is the best available. When and if we run out of this batch, I'll instantly order another batch.
Overall Score
4.0
(122 Points)
10. (2 Pack) Zoo Med Economy Analog Dual Thermometer and Humidity Gauge
User Ratings: 72 3
Zoo Med TH-27 First Impressions
"Appears to be accurate."Then she followed up again on that, asking if they had arrived and were okay. Only thing I don't love is how long the cord is. 6 inch long Bala Sharks that are known to be very unruly and boisterous. Simple fix, you adjust the thermometer within the suction cup and VIOLA! We are using them to measure various temperatures inside and outside of a motorhome. I think the people who said the suction cup broke. So, in those cases, I find it easier to simply replace it.
- (2 Pack) Zoo Med Economy Analog Dual Thermometer and Humidity Gauge
- Allows precise monitoring of both the temperature and humidity of your terrarium from one unit
- Temperature and humidity levels are extremely important to the long term heath of your animals
- Velcro backing enables easy removal for cleaning or relocation
- New Dual Analog Terrarium Thermometer/Hygrometer
- Pack of 2
- Manufacture: Zoo Med
- Product Dimensions: 6 x 2 x 4 inches; 1.6 Ounces
- Editor's Impressions Of The Zoo Med TH-27
- Thermometer Accuracy [star rating='5']
- Quality [star rating='3.7']
- Value For Money [star rating='4.1']
- Affordability [star rating='4.9']
Zoo Med TH-27 Final Thoughts
"Great product!"I use a small flashlight if I don't want to brighten the area. As you can see from my photos, in both°F and°C, all six are within. Since it is a mercury thermometer, it is very accurate. They reviewed the packaging or shipping by saying it arrived broken. One extra battery came with each unit. 89 I could buy Six Thermometers with Six included batteries. You dont HAVE to stick the display onto your tank.
Overall Score
4.5
(321 Points)