Editor's Choice - Our Favorite Marina Aquarium Thermometers

1. Marina Floating Thermometer with Suction Cup

User Ratings: 70 5

Marina 11201A1 First Impressions

"So I guess I needed them!"

This thermometer is spot on accurate. So much so that I purchased a second set of 6. Still a recommendation for me due to price and accuracy. Personally I do not mind the way it looks in my aquarium. The digital display is nice and small as well. A bit large for anything smaller than 5 gallons, but that's to be expected. This is my first 5 star review out of many many reviews on Amazon.

  • Marina Floating Thermometer with Suction Cup
  • Easy to read floating aquarium thermometer with suction cups
  • Includes a safety zone indicator appropriate for most tropical fish
  • Equipped with suction cups to attach to the side of your fish tank
  • Ensures your aquarium is at the proper temperature
  • Thermometer is 4.25 inches tall
  • Manufacture: Marina
  • Product Dimensions: 7 x 4 x 1 inches; 0.35 Ounces
  • Editor's Impressions Of The Marina 11201A1
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11201A1 Final Thoughts

"I like this."

A bit large for anything smaller than 5 gallons, but that's to be expected. Now I'm getting back in on a much smaller scale with 3 gallon Acrylic Nano tanks. The digital display itself is easy to read at a glance. They are within a degree or two of other thermometers I've checked to compare them. I am extremely pleased with this product. He acted aggressively towards it and so I ultimate ended up removing it due to that. This temperature read a perfect 32 degrees.

Overall Score
4.4


(8702 Points)

Peoples Choice - Other Highly Rated Marina Aquarium Thermometers

2. Marina Deluxe Floating Thermometer with Suction Cup

User Ratings: 69 7

Marina 11204 First Impressions

"THERE'S MORE!"

Was going to get a floater until I saw this magnetic one! 82 PER THERMOMETER with battery included. If the digital display starts to get dim, it's time for a new battery. And is easily hidden behind a plant. So far, they're all doing their job in my four tanks and I am quite content. I tested this in a cup crammed full of ice and some water. Sure enough the digital thermometer was way off by 6 degrees!

  • Marina Deluxe Floating Thermometer with Suction Cup
  • Easy-to-read floating thermometer
  • Includes a safety zone indicator
  • Equipped with suction cups
  • Ensures your aquarium is at a proper temperature
  • Temperature range of 30 to 120 degrees Fahrenheit
  • Manufacture: Marina
  • Product Dimensions: 0.5 x 3.8 x 4.3 inches; 0.18 Ounces
  • Editor's Impressions Of The Marina 11204
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11204 Final Thoughts

"The hotter, the faster."

I've checked it against two other thermometers that are accurate. Love it, it's easy to read and keeps an accurate temp. A bit large for anything smaller than 5 gallons, but that's to be expected. A battery can last you up to six months, I'd say, but expect more like three. I have to admit I had two reasons for buying six. However, Lucy at Zacro read this review and emailed me. A battery can last you up to six months, I'd say, but expect more like three.

Overall Score
4.4


(649 Points)

3. 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
  • Quality
  • Value For Money
  • Affordability

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


(251 Points)

4. Marina Floating Thermometer

User Ratings: 66 11

Marina 11200A1 First Impressions

"Versatile."

Have checked them against the glass thermometers and the accuracy is right on. 50 thermometers, reads much easier and no suction cup residue, also looks better. The units each had a battery in place and situated for immediate use. In this scenario it would probably get knocked loose a lot. One of my aquariums is glass, and the other two are plastic. So far, they're all doing their job in my four tanks and I am quite content. Then is started to give a low reading, and it is not reading the correct temperature.

  • Marina Floating Thermometer
  • Item Package Height: 19.812 Centimeters
  • Item Package Length: 1.778 Centimeters
  • Item Package Width: 10.922 Centimeters
  • Product Type: Pet Supplies
  • Manufacture: Marina
  • Product Dimensions: 0.4 x 3.7 x 4.2 inches; 0.64 Ounces
  • Editor's Impressions Of The Marina 11200A1
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11200A1 Final Thoughts

"Super easy."

Excellent working for our bearded dragon tank. These things are useful for a lot besides pet husbandry, too. I ordered a new one and it works GREAT! I bent it a little bit and when I put it back it was perfectly fine. I used these on a number of my aquariums that have discus fish in them. Have checked them against the glass thermometers and the accuracy is right on. So far, they're all doing their job in my four tanks and I am quite content.

Overall Score
4.2


(102 Points)

Honorable Mentions - More Top Selling Marina Aquarium Thermometers

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
  • Quality
  • Value For Money
  • Affordability

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. Marina " Diameterorado", 66 to 88 F / 19 to 31 C

User Ratings: 57 15

Marina 11223 First Impressions

"Very accurate."

This company is taking the long term view of how to do business right. I needed a solution that was not breakable and these do the trick! The suction works for a month at a time- in pool and hot tub circulation. The plastic from the suction cup quickly turned from a clear to a milky white. Then is started to give a low reading, and it is not reading the correct temperature. I got root rot after light leaks and high water temps. Then is started to give a low reading, and it is not reading the correct temperature.

  • Marina " Diameterorado", 66 to 88 F / 19 to 31 C
  • Easy To Mount Thermometer For Glass Aquariums
  • Measures In Celsius And Fahrenheit
  • Temperature Range Of 66 To 88-Degree Fahrenheit And 19 To 31-Degree Celsius
  • Equipped With Adhesive Backing For Durable Hold
  • Measures 3-inch long
  • Manufacture: Marina
  • Product Dimensions: 0.3 x 3 x 7 inches; 0.32 Ounces
  • Editor's Impressions Of The Marina 11223
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11223 Final Thoughts

"That adds peace of mind."

I find that the temps are accurate, and this product gives added peace of mind. I ordered a new one and it works GREAT! Very accurate, have checked it with other thermometers as well. 89 I could buy Six Thermometers with Six included batteries. One being a very expensive digital. I've checked it against two other thermometers that are accurate. He was moving slow in the winter and we realized he needed a heater!

Overall Score
4.0


(47 Points)

7. 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
  • Quality
  • Value For Money
  • Affordability

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)

8. Marina Standing Thermometer, Fahrenheit and Celsius Aquarium Thermometer, 11202

User Ratings: 53 5

Marina 11202 First Impressions

"So far so good."

All were Close enough for a fish tank and other uses. So this is the extreme end of the high temperature range. 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. It is about 6 inches in length and roughly an inch wide. One of my aquariums is glass, and the other two are plastic. I don't think i'll ever be able to trust a digital thermometer again.

  • Marina Standing Thermometer, Fahrenheit and Celsius Aquarium Thermometer, 11202
  • Fish tank thermometer designed to sink to the bottom
  • Remains standing in a vertical position
  • Accurate and easy-to-read thermometer
  • Provides readings in Fahrenheit and Celsius
  • Includes safety zone indicator appropriate for most tropical fish
  • Manufacture: Marina
  • Product Dimensions: 0.5 x 3.8 x 7 inches; 0.64 Ounces
  • Editor's Impressions Of The Marina 11202
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

Marina 11202 Final Thoughts

"Subtracted from the tank."

This doesn't bother me as it ws so cheap. I have this thermometer on all my tanks. The suction works for a month at a time- in pool and hot tub circulation. Works well in my betta tank, but provide a couple hours for it to read temp changes. This doesn't bother me as it ws so cheap. And is easily hidden behind a plant. And I just really started to doubt it.

Overall Score
4.0


(32 Points)

9. 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
  • Quality
  • Value For Money
  • Affordability

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)

10. SunGrow Betta Sticker Thermometer, Ensure Optimum Comfort Around 78 Degrees, Accurately Measures Tem...

User Ratings: 60 6

SunGrow First Impressions

"1 degrees F at all times."

A battery can last you up to six months, I'd say, but expect more like three. 6 inch long Bala Sharks that are known to be very unruly and boisterous. One being a very expensive digital. I have kept aquariums for about 45 years. So far, they're all doing their job in my four tanks and I am quite content. So much easier than the ones that hang on the inside. It is about 6 inches in length and roughly an inch wide.

  • SunGrow Betta Sticker Thermometer, Ensure Optimum Comfort Around 78 Degrees, Accurately Measures Temperature, Large Fonts for Quick Reading, 1 Minute to Set-Up
  • A MUST HAVE TO MAINTAIN NATURAL TROPICAL HABITAT FOR BETTA --- In nature, betta fish are often found in warm and hot waters in low altitude areas such as Burma and Thailand. For the healthiest and most active betta, it is important that their environment be as close as possible to their natural habitat. Since betta are accustomed to consistent tropical temperatures, having an effective betta thermometer is essential to ensure the perfect temperature for your pet fish.
  • EASILY MONITOR YOUR BETTA TANK WATER TEMPERATURE --- When it comes to monitoring the water temperature of your betta tank, the most useful tool you can find is an aquarium thermometer. Don’t let your betta tell you it’s too cold or hot in the tank for them, by getting ill, and risk losing them. The cost-effective, Peel & Stick SunGrow Betta Thermometer quickly tells you the temperature at a quick glance any time, so that you can make potentially life saving adjustments to your betta tank water.
  • SIMPLE, PRACTICAL, EASY TO READ & SETUP --- Designed to be simple to read and attach (just peel and stick), the paper thin thermometer is 5.2” tall by 0.7” wide (13cm x 1.8cm). It is all black with temperature measurements written in white, easy enough to read for even your kids to tell. Using color indication, the water temperature that the thermometer reads will change to a blue color on the measurement scale. The measurement range is 64-93 degrees Fahrenheit or 18-34 degrees Celsius.
  • HELPS PROTECT BETTA FROM DISEASE LIKE FUR COAT SYNDROME --- As they are so sensitive to water temperature changes, betta are particularly susceptible to diseases such as Fur Coat Syndrome. It is a dermal bacterial infection that discolors betta’s fins and covers your fish in a furry mold. Fur Coat Syndrome is nearly always fatal within 30 hrs of symptoms showing and is highly contagious. However, this disease is easily prevented if you keep your betta’s water between 78° to 80° Fahrenheit.
  • ENSURE HAPPINESS & LONGEVITY OF BETTA --- Being able to quickly and accurately read your betta tank’s water temperature is essential to keeping your betta fish healthy. The betta thermometer that you choose needs to be reliable and provide you with an factual
  • Manufacture: Luffy Pets Collection
  • Editor's Impressions Of The SunGrow
  • Thermometer Accuracy
  • Quality
  • Value For Money
  • Affordability

SunGrow Final Thoughts

"These are great!"

The plastic from the suction cup quickly turned from a clear to a milky white. I used these on a number of my aquariums that have discus fish in them. I tested this in a cup crammed full of ice and some water. Love it, it's easy to read and keeps an accurate temp. For the price I'll probably end up putting these in all of my aquariums. 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!

Overall Score
4.2


(84 Points)

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