Editor's Choice - Our Favorite AquaTop Aquarium Thermometers
1. AquaTop ATP Thermometer Submersible
User Ratings: 28 16
AquaTop DTG-15 First Impressions
"Very accurate."So, in those cases, I find it easier to simply replace it. I have always had trouble reading the color temp. So far, they're all doing their job in my four tanks and I am quite content. For something so cheap, they are working remarkably well. Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. I used to have a large hang in the side tank that you couldn't miss. My only complaint is that they tend to be a one time use.
- AquaTop ATP Thermometer Submersible
- The sleek, compact designs provide easy placement, making the DTG-15 and dtg-25 the perfect choice for aquariums of all sizes.
- The digital thermometers are accurate to +/- 2 degrees Fahrenheit.
- The DTG-15 is fully submersible and has a suction cup mount.
- The dtg-25 has an adhesive back for easy installation and must be mounted externally.
- Suction Cup mount
- Manufacture: Aquatop
- Product Dimensions: 8 x 3 x 2 inches; 1.41 Ounces
- Editor's Impressions Of The AquaTop DTG-15
- Thermometer Accuracy [star rating='4']
- Quality [star rating='3.1']
- Value For Money [star rating='3.3']
- Affordability [star rating='2.4']
AquaTop DTG-15 Final Thoughts
"I opened the first three."I was using one of those ubiquitous cheap digital thermometers on Amazon. These digital thermometers are great and there is no guesswork involved. 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 can't say which is the most accurate and don't really care. So much easier than the ones that hang on the inside. This temperature read a perfect 32 degrees.
Overall Score
3.1
(6 Points)
PRICE AVAILABLE ON AMAZON
Peoples Choice - Other Highly Rated AquaTop Aquarium Thermometers
2. Aquarium Digital Thermometer
User Ratings: 52
AquaTop DTG-25 First Impressions
"Versatile."I came here to give this product a positive review. The only reason I didn't give this 5 stars is because my betta fish didn't like it. When I set up my newest tank I will be getting another one of these. So the extra units will always come in handy. You can glue, tape or simply cover the cords in the tank to keep them discreet. This little wonder allows me to see at a glance that everything is as it should be. Bought the two pack of thermometers.
- Aquarium Digital Thermometer
- Included Components: Atp Thermometer External Dual
- Age Range Description: All Life Stages
- Manufacture: Aquatop
- Product Dimensions: 8 x 3 x 2 inches; 3.84 Ounces
- Editor's Impressions Of The AquaTop DTG-25
- Thermometer Accuracy [star rating='4.6']
- Quality [star rating='4.9']
- Value For Money [star rating='3']
- Affordability [star rating='4.4']
AquaTop DTG-25 Final Thoughts
"They are within 0."A battery can last you up to six months, I'd say, but expect more like three. This company is taking the long term view of how to do business right. I got the second one as a bonus that I'm now using in my old tank. Love it, it's easy to read and keeps an accurate temp. Now if it falls into a sink full of water, it's not a problem. 50 thermometers, reads much easier and no suction cup residue, also looks better. It started working as soon as I put it in and has been working ever since.
Overall Score
4.0
(3 Points)
PRICE AVAILABLE ON AMAZON
Here Are Some Other Related Aquarium Thermometers
3. 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)
PRICE AVAILABLE ON AMAZON
4. Smarttemp Thermometer
User Ratings: 75 10
JW Pet BC209450 First Impressions
"Close enough I reckon!"You can use the thermometer with or without the plastic suction cup. I ordered a new one and it works GREAT! Ordered three of these and they do the job. 82 PER THERMOMETER with battery included. I ordered this guy and it was 6 degrees hotter than the digital! The only reason I didn't give this 5 stars is because my betta fish didn't like it. These things are useful for a lot besides pet husbandry, too.
- Smarttemp Thermometer
- Stays in place with a unique magnetic fastening system.
- Smarttemp Thermometer
- All items are brand new, never worn and never used. We guarantee the authenticity of all items.
- Manufacture: JW - Dog/Cat/Aquatic
- Product Dimensions: 7 x 4 x 0.6 inches; 0.8 Ounces
- Editor's Impressions Of The JW Pet BC209450
- Thermometer Accuracy [star rating='3.5']
- Quality [star rating='3.8']
- Value For Money [star rating='4.7']
- Affordability [star rating='4.7']
JW Pet BC209450 Final Thoughts
"Only thing the battries."Since it is a mercury thermometer, it is very accurate. It is about 6 inches in length and roughly an inch wide. It is large enough to see without being obtrusive. It works equally well on all of them. Far more accurate than the usual small glass ones or external LCD strips. Now if it falls into a sink full of water, it's not a problem. Ordered three of these and they do the job.
Overall Score
4.4
(63 Points)
PRICE AVAILABLE ON AMAZON
5. SHARPTEMP-V Veterinary Thermometer. Fast, Accurate Temperatures in 8-10 Sec. Beeps When Ready. Stain...
User Ratings: 74 7
SHARPTEMP-V First Impressions
"Great product!"For something so cheap, they are working remarkably well. They are within a degree or two of other thermometers I've checked to compare them. And is easily hidden behind a plant. When and if we run out of this batch, I'll instantly order another batch. The units each had a battery in place and situated for immediate use. Who knows, whatever it was, it was revolting! The temperature fluctuated a lot with it.
- SHARPTEMP-V Veterinary Thermometer. Fast, Accurate Temperatures in 8-10 Sec. Beeps When Ready. Stainless-Steel Probe w/Rounded Tip. Safe for All Farm Animals & Pets.
- DIGITAL VETERINARY THERMOMETER: The Sharptemp-V Veterinary Thermometer is a versatile digital thermometer built rugged enough for heavy- duty use on-farm, in the stable, at the veterinary clinic and at home. The 4-inch probe length meet the needs of all types of large livestock, horses, and companion animals.
- FAST & ACCURATE: Fast, accurate temperature readings in 8 to 10 seconds depending on conditions. Measures from 90 °F to 107°F and is accurate to +/- 0.1 F°. The large easy-read 3/8”-high LCD blinks while stabilizing then emits an audible beep when an accurate temperature is reached. Auto shut-off after 9 minutes. This Veterinary Thermometer reads Fahrenheit ( °F) only.
- VERSATILE & SAFE: Sharptemp Veterinary Thermometer is for oral or rectal use in animals. Stainless steel probe is 3/16” (5mm) diameter with blunt end for safe insertion. Normal temperatures for common pets and farm animals are printed on the back for convenient reference. The tough durable plastic body and surgical-grade stainless-steel probe surfaces are designed for easy cleaning and disinfection.
- BUILT TOUGH: Tough, durable, plastic thermometer BODY (without probe) measures 4” x 1-1/8” x 5/8” and fits ergonomically in hand. The woven nylon lanyard loops comfortably over wrist. The hard-plastic friction-fit probe cover prevents damage and slides on and off with ease. Includes one user- replaceable LR44 hearing aid battery and a sturdy, protective polyethylene storage case.
- IN THE BOX: One Sharptemp digital veterinary thermometer with 4-inch probe, probe cover, battery, instructions and sturdy plastic storage case. CE- approved. One-year warranty. Click “ADD to CART” and start measuring animal temperatures fast and accurately with the Sharptemp Veterinary Thermometer. Your satisfaction is 100% guaranteed!
- Manufacture: Contran Corporation
- Editor's Impressions Of The SHARPTEMP-V
- Thermometer Accuracy [star rating='4.1']
- Quality [star rating='4.7']
- Value For Money [star rating='4.7']
- Affordability [star rating='4.2']
SHARPTEMP-V Final Thoughts
"6 tenths of a degree."The plastic from the suction cup quickly turned from a clear to a milky white. This is my first 5 star review out of many many reviews on Amazon. Excellent working for our bearded dragon tank. I got root rot after light leaks and high water temps. These are the perfect size to be easily read while not being obtrusive. My 50+ eyes cannot read a regular tank thermometer without squinting. It started working as soon as I put it in and has been working ever since.
Overall Score
4.5
(23 Points)
PRICE AVAILABLE ON AMAZON
6. Fashion Life Aquarium Fish Tank Thermometer Temperature Sticker Digital Dual Scale Stick-On Durable
User Ratings: 34 21
Fashion Life First Impressions
"Doing the math."SIX Digital Thermometers with SIX batteries INCLUDED working so well. 89 I could buy Six Thermometers with Six included batteries. It works equally well on all of them. You can use the thermometer with or without the plastic suction cup. I have bought many many temperature gauges for my various fish tanks over the years. I came here to give this product a positive review. For the price I'll probably end up putting these in all of my aquariums.
- Fashion Life Aquarium Fish Tank Thermometer Temperature Sticker Digital Dual Scale Stick-On Durable
- Brand new with high quality.
- Stick on the outer surface of fish tank.
- Simple to use and convenient to read.
- Look no further, buy instantly.
- Manufacture: Fashion Life
- Editor's Impressions Of The Fashion Life
- Thermometer Accuracy [star rating='4.3']
- Quality [star rating='3.6']
- Value For Money [star rating='3.7']
- Affordability [star rating='3.6']
Fashion Life Final Thoughts
"Very accurate."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. I bought these for my dwc reservoirs. In this scenario it would probably get knocked loose a lot. And I just really started to doubt it. I recommend gluing the suction cups in place where needed for long-term installation. The lid is textured aluminum, and the suction cups don't stick to that.
Overall Score
3.6
(14 Points)
PRICE AVAILABLE ON AMAZON
7. 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
(36 Points)
PRICE AVAILABLE ON AMAZON
8. 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)
PRICE AVAILABLE ON AMAZON
9. Qooltek Mini Digital Hygrometer Thermometer Indoor Humidity Monitor with Temperature Humidity Gauge ...
User Ratings: 65 6
Qooltek BFBA-0009 First Impressions
"Great little thermometer."I removed the batteries of the units I wasn't using right away. Works well in my betta tank, but provide a couple hours for it to read temp changes. 6F all six took about three minutes to read between 88. All are pretty accurate within one degree as claimed. When I set up my newest tank I will be getting another one of these. My poor fish was in 86 degrees water for a month. Was going to get a floater until I saw this magnetic one!
- Qooltek Mini Digital Hygrometer Thermometer Indoor Humidity Monitor with Temperature Humidity Gauge Meter for Cars Incubators and Brooders Climb Pet (Fahrenheit)
- Mini Digital LCD Thermometer Humidity Temperature.
- Temperature Range: -40°F ~ 140°F
- Measuring Humidity Range: 10% RH ~ 95% RH
- Humidity Accuracy:5% ; Humidity Display Resolution: 1% RH
- Mini size perfect to use in incubators, brooders, cigar humidors,reptile tank. If you do not like the small temperature display, you can consider the new hygrometer thermometer - ASIN B079JB3YYL
- Manufacture: Qooltek
- Part Number: 050-029
- Material: Metal
- Item Weight: 0.705 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 BFBA-0009
- Thermometer Accuracy [star rating='4.9']
- Quality [star rating='4']
- Value For Money [star rating='4']
- Affordability [star rating='4.2']
Qooltek BFBA-0009 Final Thoughts
"Suction cups fail."And for the price you cant beat it. I have mine on my 60 gallon cube marine tank. This temperature read a perfect 32 degrees. This thermometer is spot on accurate. These things are useful for a lot besides pet husbandry, too. Ordered three of these and they do the job. I'm pretty sure those reviewers have acrylic tanks.
Overall Score
4.3
(357 Points)
PRICE AVAILABLE ON AMAZON
10. Marina Aqua-Minder Programmable Digital Thermometer
User Ratings: 60 11
Marina 11190 First Impressions
"Sticks easy."Good cheap accurate aquarium thermometer. I removed the batteries of the units I wasn't using right away. I ordered this guy and it was 6 degrees hotter than the digital! Love it, it's easy to read and keeps an accurate temp. 49 thermometer that is 100% accurate. It works equally well on all of them. The non-working ones still provide 2 batteries each AND.
- Marina Aqua-Minder Programmable Digital Thermometer
- Provides continuous monitoring of temperature
- Six programmable English tasks
- Measures 32 degrees Fahrenheit to 199 degrees Fahrenheit
- Ideal for people with busy schedules
- For better product understanding please refer to the back of the product
- Manufacture: Marina
- Product Dimensions: 0.9 x 4.9 x 8 inches; 3.2 Ounces
- Editor's Impressions Of The Marina 11190
- Thermometer Accuracy [star rating='4.3']
- Quality [star rating='4.8']
- Value For Money [star rating='4.6']
- Affordability [star rating='4']
Marina 11190 Final Thoughts
"Perhaps it's my fault."2 deg, if it was 32, it would be a SOLID block of ice. I can't say which is the most accurate and don't really care. It is easy to use and install it'disappears' in your tank it is so unobtrusive. Very impressed, I have now had them in used for a month so far. However, Lucy at Zacro read this review and emailed me. I think the people who said the suction cup broke. The suction will never be the same.
Overall Score
4.0
(37 Points)
PRICE AVAILABLE ON AMAZON