Editor's Choice - Our Favorite Lifegard Aquatics Aquarium Thermometers

1. Lifegard Aquatics Full-View 5 Gallon Aquarium R800204 with LED Light Heater Thermometer, Net & Built...

User Ratings: 46 24

Lifegard Aquatics R800204 First Impressions

"The hotter, the faster."

If the digital display starts to get dim, it's time for a new battery. Works well in my betta tank, but provide a couple hours for it to read temp changes. Have checked them against the glass thermometers and the accuracy is right on. These are the perfect size to be easily read while not being obtrusive. So, in those cases, I find it easier to simply replace it. Put them all in the same tank and they read very close to each other. One extra battery came with each unit.

  • Lifegard Aquatics Full-View 5 Gallon Aquarium R800204 with LED Light Heater Thermometer, Net & Built-in Back Filter with Pump
  • Clear angled front glass for greater viewing area
  • Pump included in the full built-in back filter
  • Bonus items included - Full spectrum LED light, heater, thermometer, Net and algae magnet
  • Water level control
  • Insulation base pad
  • Manufacture: Lifegard Aquatics
  • Product Dimensions: 14 x 14 x 10 inches; 18 Pounds
  • Editor's Impressions Of The Lifegard Aquatics R800204
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Lifegard Aquatics R800204 Final Thoughts

"It's accurate I tell you."

Since adding one of these, it has been much easier to monitor the temp of my tanks. I have kept aquariums for about 45 years. Ordered three of these and they do the job. When I set up my newest tank I will be getting another one of these. For something so cheap, they are working remarkably well. SIX Digital Thermometers with SIX batteries INCLUDED working so well. This little wonder allows me to see at a glance that everything is as it should be.

Overall Score
3.4


(5 Points)

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
  • Quality
  • Value For Money
  • Affordability

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)

3. Inkbird Dual Probe Thermometer for Fish Tank, Water Terrarium Only for C929-A Probe

Inkbird First Impressions

"2-degrees."

Set all six probes up in a terrarium with a constant temp of 88. I can't say which is the most accurate and don't really care. If the digital display starts to get dim, it's time for a new battery. These digital thermometers are great and there is no guesswork involved. These are the perfect size to be easily read while not being obtrusive. Place it on your aquarium and you are good to go. I find that the temps are accurate, and this product gives added peace of mind.

  • Inkbird Dual Probe Thermometer for Fish Tank, Water Terrarium Only for C929-A Probe
  • Manufacture: Inkbird
  • Editor's Impressions Of The Inkbird
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"So far so good."

And for the price you cant beat it. I recommend gluing the suction cups in place where needed for long-term installation. The non-working ones still provide 2 batteries each AND. So much easier than the ones that hang on the inside. This little wonder allows me to see at a glance that everything is as it should be. So far I've been very thrilled with these. Who knows, whatever it was, it was revolting!

Overall Score
5.0


(1 Points)

4. 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
  • Quality
  • Value For Money
  • Affordability

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)

5. uxcell Plastic Aquarium Sticker Thermometer Temperature Inductive Adhesive Strip Black

uxcell a16120700ux0055 First Impressions

"2-degrees."

I bought these for my dwc reservoirs. The units each had a battery in place and situated for immediate use. It is my opinion that everyone should have these that are in the Aquarium Hobby. SIX Digital Thermometers with SIX batteries INCLUDED working so well. One being a very expensive digital. Still a recommendation for me due to price and accuracy. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks.

  • uxcell Plastic Aquarium Sticker Thermometer Temperature Inductive Adhesive Strip Black
  • Product Name: Sticker Thermometer
  • Package Content: 1 x Sticker Thermometer
  • Color: Black
  • Weight: 10g
  • Product Size: 13 x 2 cm/5" x 0.8"(L*W)
  • Manufacture: uxcell
  • Editor's Impressions Of The uxcell a16120700ux0055
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

uxcell a16120700ux0055 Final Thoughts

"Holds a steady 1."

I used to have a large hang in the side tank that you couldn't miss. Still a recommendation for me due to price and accuracy. The non-working ones still provide 2 batteries each AND. 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. Very impressed, I have now had them in used for a month so far. I ordered this guy and it was 6 degrees hotter than the digital!

Overall Score
3.0


(1 Points)

6. UEETEK Aquarium Thermometer Fish Tank Thermometer LCD Digital with Suction Cup for Pond Marine (Blac...

User Ratings: 17 19

UEETEK First Impressions

"It works great."

SIX Digital Thermometers with SIX batteries INCLUDED working so well. So far, they're all doing their job in my four tanks and I am quite content. He was moving slow in the winter and we realized he needed a heater! Now that the chickens are grown, I have one out in the coop as well. My only complaint is that they tend to be a one time use. Since adding one of these, it has been much easier to monitor the temp of my tanks. Was going to get a floater until I saw this magnetic one!

  • UEETEK Aquarium Thermometer Fish Tank Thermometer LCD Digital with Suction Cup for Pond Marine (Black) - 2 Pieces
  • Digital LCD Thermometer for Aquarium Fish Tank Vivarium Reptile Terrarium
  • Ideal for Aquarium or terrarium temperature monitoring.
  • Aquarium Thermometer, Digital Water Thermometer For Fish Tank Aquarium Marine Temperature.
  • -Attach the display unit to the outside of the tank using the suction cups and submerge the probe into the water in the tank.
  • The thermometer is accurate enough to create readings within 0.1 degree
  • Manufacture: UEETEK
  • Product Dimensions: 2.28 x 1.42 x 0.47 inches; 1.76 Ounces
  • Editor's Impressions Of The UEETEK
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

UEETEK Final Thoughts

"Works perfect."

I ordered this guy and it was 6 degrees hotter than the digital! I think the people who said the suction cup broke. So far, they're all doing their job in my four tanks and I am quite content. Simple fix, you adjust the thermometer within the suction cup and VIOLA! Still a recommendation for me due to price and accuracy. The temperature fluctuated a lot with it. It is large enough to see without being obtrusive.

Overall Score
3.2


(6 Points)

7. Fluval Submersible Digital Thermometer

User Ratings: 63 12

Fluval 11194 First Impressions

"Perhaps it's my fault."

Very impressed, I have now had them in used for a month so far. My only complaint is that they tend to be a one time use. This thermometer is spot on accurate. So much easier than the ones that hang on the inside. Sure enough the digital thermometer was way off by 6 degrees! I have this thermometer on all my tanks. 6 inch long Bala Sharks that are known to be very unruly and boisterous.

  • Fluval Submersible Digital Thermometer
  • Features a large LED display
  • Fully submersible thermometer
  • Large screen for easy reading
  • Country Of Origin: China
  • Manufacture: Rolf C. Hagen (USA) Corp.
  • Product Dimensions: 1 x 2.6 x 4.9 inches; 0.81 Ounces
  • Editor's Impressions Of The Fluval 11194
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Fluval 11194 Final Thoughts

"It sticks very firmly."

I needed a solution that was not breakable and these do the trick! I have this thermometer on all my tanks. The suction works for a month at a time- in pool and hot tub circulation. Since it is a mercury thermometer, it is very accurate. My 50+ eyes cannot read a regular tank thermometer without squinting. Ordered three of these and they do the job. I just wrote it off as a minor loss.

Overall Score
3.9


(53 Points)

8. 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
  • Quality
  • Value For Money
  • Affordability

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)

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. 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
  • Quality
  • Value For Money
  • Affordability

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)

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