9 Best Aquarium Thermometers – Precise and Easy to Use!

For those of you who want a straightforward and easy to read interface, this digital aquarium thermometer is the one for you. The small and easy to use thermometer simply sticks on to your tank and gives you an almost immediate reading. The JCreate Aquarium Thermometer only requires a battery to use and frees you of all the messy wires and probes you might typically find on an aquarium thermometer. In order to insert the battery, you simply pull down the red battery cover and pop it right in. Even your kids could do it! The digital interface also features large numbers, making the tank’s temperature that much easier to read. This digital aquarium thermometer isn’t exclusive to fish tanks either. It is also suitable for your reptiles, whether they be lizards, snakes, or turtles. Have no pets? No problem. This aquarium sticker thermometer even works with greenhouses, so you can sleep well at night knowing your plants are kept at a comfortable temperature all day long. If you are looking for the best digital aquarium thermometer with the most accurate reading for your pets or plants, look no further. The JCreate Aquarium Thermometer has got you covered!

What we liked: The easy to read display and accurate temperature reading are certainly some of this thermometer’s best features.

What could be better: The thermometer has been known to not work on some acrylic tanks.

It’s 2020, which probably means that you’ve upgraded all of your household electronics to their latest models. So why not upgrade your aquarium thermometer and heater too? Enter the Inkbird C929A- with its WiFi capabilities and continuous heating time alarm, you’ll be left wondering why it’s taken you so long to get it. The dual-probe aquarium heater has the capability to pair with your phone and send push notifications anytime something is amiss in your aquarium. No more constant worrying about the safety of your fish, the Inkbird C929A has got you covered. Because of the dual probes, your aquarium’s temperature will always be as accurate as possible. To get started with your new fish aquarium thermometer, simply plug it in. From there, you’ll be able to start controlling the temperature of your aquarium’s water almost immediately. Once you’ve got the App set up on your phone, you’ll be able to start heating up your tank and adjust it as needed.  If anything were to go wrong with your device, the Inkbird C929A comes with a two-year warranty on your controller and a one-year warranty for the dual probes.

What we liked: The aquarium thermometer is easy to use, and we love the option to control the device from your phone!

What could be better: The Inkbird C929A doesn’t allow for cooling, only heating.

If you’re looking for an aquarium thermometer that can give you quick but accurate results, the Inkbird Wireless Thermometer is the one for you. The Bluetooth enabled device displays not just temperature but also the humidity levels in your tank. Complete with an app for your phone, you’ll wish you had purchased this sooner. Using your phone, you can monitor the humidity and temperature levels via the probe on the device. The App, which is available in more than one language, provides you with all types of data, including when your aquarium thermometer needs its batteries replaced. And yes, you can control more than one device via one phone, and vice versa. An alarm will also sound on your phone when humidity levels are too high. The thermometer has a magnetic back, which makes it easy to attach to your tank, and comes with a one-year warranty. While the probe is waterproof, the device itself isn’t, so you may want to be careful when placing it near your aquarium.

What we liked: We love how easy this device makes monitoring the humidity and temperature levels on your tank!

What could be better: The digital aquarium thermometer isn’t entirely waterproof.

Let’s face it- aquarium thermometers aren’t always the most attractive, especially compared to the beautiful creatures they help monitor. Luckily, Atsani has come up with a solution. Their sleek and easy-to-use LCD aquarium thermometer is a pet owner’s dream come true. The LCD screen beautifully displays the tank’s water temperature, the indoor temperature and even tells you how much battery life your thermometer has left. The screen is even easy to read at night without having to turn on any obnoxious lights. The thermometer’s instructions are simple and easy to follow. Stick it on to the tank, lower the probe into the water, and voila, it will display the temperature, whether in Celsius or Fahrenheit. The aquarium thermometer comes with its own LR 44 battery and a one-year warranty to make sure you’re completely satisfied with the product.

What we liked: The aquarium thermometer has a sleek look that will fit right in with any tank or terrarium. The display is large and can be read even at night.

What could be better: Does not come with a replacement battery and the original battery only lasts five months.

There’s no denying it; an aquarium needs its own thermometer whether we like it or not. But just because it’s necessary doesn’t mean it can’t be discreet. That’s why we love the Qguai Aquarium Thermometer. The clear screen means you can easily check the tank’s temperature while still being able to keep an eye on your beloved fish. What’s even better is the fact that you don’t have to deal with any messy chords or worry about plugging in this aquarium sticker thermometer. It sticks right to the tank without leaving behind any sticky residue upon removal due to specially made insulative tape. Once attached to the tank, you can switch back and forth between Fahrenheit and Celsius by simply pressing up or down on the switch. The Oguai Aquarium Thermometer is not only aesthetically pleasing, but it will also make sure your fish’s tank is as accurate to their natural habitat as possible.

What we liked: We love how this sticker thermometer looks on every tank!

What could be better: Unfortunately, this aquarium thermometer, although beautiful to look at, doesn’t last very long. However, Oguai does provide you with a six-month warranty should anything happen.

If you’re an informed fish owner, you know that not all fish are created equal. That is, not every fish prefers the same environment. Some species prefer warmer waters, while others prefer their water temperature on the cooler side. So how can you know when you have the right temperature? By using a Freesea Aquarium Heater. This device allows you to heat up the water in your tank while also maintaining the right temperature for your pet. The aquarium thermometer will immediately stop heating once it reaches the set temperature, so you don’t have to worry about keeping an eye on it. Unlike other heaters, the Freesea Aquarium Heater is entirely waterproof and can be submerged completely in the tank. No matter the size of your fish tank, whether it be one or five gallons, the water temperature will remain as warm as you like.

What we liked: The aquarium heater can be completely submerged in water, so there’s no need to worry about ruining it. Not to mention it also has a 12-month warranty!

What could be better: The heater has to be completely underwater for it to work.

If you’re a pet owner, chances are you know just how expensive it can be. Between food, toys, and providing them with a safe and healthy environment, things can add up. That’s why when shopping around for an affordable LCD aquarium, you may want to stop here. At just under $12, the POPETPOP LCD Digital Aquarium Thermometer is truly a bang for your buck. The thermometer can clip on to the tank or can be stuck on via its suction cup. Aside from giving you an accurate reading, being easy to use, and being durable, this thermometer is also eco-friendly. They are made out of an environmentally friendly material that covers and keeps the device safe. The POPETPOP LCD Digital Aquarium Thermometer also has a large LCD screen that makes the temperature easy to read. You can set it to whatever minimum and maximum temperatures you see fit for your pet. This LCD thermometer can be easily used in both saltwater and freshwater tanks.

What we liked: We love that this thermometer is eco-friendly! We also love how portable and easy to use it is.

What could be better: It isn’t entirely waterproof.

If you’re looking for straightforward, no-frills saltwater or a freshwater thermometer, the Zacro LCD Digital Aquarium Thermometers are your best bet. The two-pack rings in at just under $10 and have their own suction cups making it easy to assemble and get to work. Unlike some of the more expensive aquarium thermometers, these do just what they’re intended to do— read the water’s temperature. The large LCD screen displays the temperature in either Fahrenheit or Celsius within one degree. Each thermometer also comes with a battery and a probe, allowing you to replace one when it stops working. This thermometer is ideal for those who don’t wish to spend their free time reading instruction manuals and simply want to maintain their tank’s temperature in the right setting.

What we liked: It comes in a pack of two, which means you get an automatic replacement when one gives out.

What could be better: It’s not as aesthetically pleasing as other aquarium thermometers.

Are you tired of having to purchase aquarium thermometers over and over again? Wish you could simply buy them in bulk? Well, now you can! The VIVOSUN LCD Digital Aquarium Thermometer comes in a nifty pack of four, which means you’ll never be short of them. But wait, it only gets better from here! The display is large enough for even those with not-so-great vision, comes with an extra-long cable, is easy to adjust, and is easy to attach to any aquarium thanks to two suction cups. The thermometer also includes a long-lasting battery that won’t give up so easily.

What we liked: These come in a pack of four, so you’ll never run out!

What could be better: The extra-long cable could potentially get in the way.