Best Aquarium Thermometer – 2018 Reviews (Top Picks) & Guide

There are different kinds of fish that can be kept in your freshwater aquarium, and some are highly sensitive to cold and heat. In case you own such fish, you can’t rely on the heating device in your house. You have to get a thermometer for your aquarium in order for it to be simple for you to adjust and monitor the temperature inside the aquarium viably.

You may think that the temperature in the aquarium doesn’t need to be monitored, but when there is undesirable water temperature in your aquarium, this can pose some negative effects on the plants and fish in the tank. This requires you to buy a very dependable and durable thermometer for your saltwater aquarium.

When you are choosing an aquarium thermometer, it’s advisable to search for the best brand available so you don’t end up getting a thermometer that has the tendency of breaking inside your fish tank. The thermometers contain some lead-based substances such as mercury which can affect your aquarium inhabitants if they break.

However, how would you know if the water in your aquarium has the correct temperature? Before you get a correct reading, you will need to get one of the most accurate and the best aquarium thermometer available. You don’t need to stress yourself so much because, in this article, we will discuss everything you need to know about aquarium thermometers and also review some of the best models for your fish tank. So read on!

Types of Aquarium Thermometers

There are different types of aquarium thermometers. It is very essential for you to know the various types that are available in order for to be able to pick the right one for your tank temperature modification needs. The most widely recognized kinds of aquarium thermometers are:

1. Digital Aquarium Thermometer

This kind of aquarium thermometer is well known to be the priciest of all, particularly when you buy the best digital thermometer for your aquarium. However, some dependable digital thermometers are really very cheap, despite the fact that they are exceptionally accurate. They aren’t influenced by the ambient temperature of the room.

The setup of the device is normally a probe matched with a digital display that is simple to read. Sometimes, the reading of the temperature is in both °F and °C. Generally, there is a wire that links them to one another, but some always come with a wireless connection. A lot of these devices are powered by batteries, yet some can be connected to an electrical plug.

Sometimes, the probe is placed in the fish tank to constantly monitor the temperature. It might even come with an alarm feature that will notify you when the temperature leaves your chosen range. The thermometer is very robust and is just unbreakable. In case you are searching for the best thermometer for your freshwater aquarium, you will need to check out this category.

2. Floating or Standing Aquarium Thermometer

With this type of aquarium thermometer, you will need to submerge the entire thing. This isn’t digital, so you might experience difficulty reading the little print scale. To tackle this issue, some makers have a wide variety of colors for the protected zone, so you will know immediately when the temperature drops out of your chosen range. However, when you have a huge tank, you might need to consider utilizing a lot of these aquarium thermometers on either side of the tank.

One major concern here is that a large number of these aquarium thermometers are built with glass. That makes the devices to be considerably more fragile compared to the other kinds of thermometers. However, some models are built with stainless steel while others are built with plastic. Many make use of suction cups to remain set up. Some are highly magnetic, which implies that you can sustain it using a magnet outside. Other models are flowing freely in the water but you can likewise get standing models weighted at the base.

These devices are very cheap. But you may not find some features like LCD readings or even alerts. It is likewise not as accurate as the first type of aquarium.

3. Stick-On Aquarium Thermometer

In some cases, these are known as LCD thermometers since they have a kind of LCD display. Some makers have even attempted calling them digital thermometers, however, they are not similar to the real digital thermometers discussed earlier in this buying guide article. Ensure you aren’t getting an ordinary LCD thermometer when it is a digital one you require.

The stick-on thermometers are positioned on the outside part of the aquarium, and that makes the temperature reading less dependable. Their readings can be influenced by the room’s air temperature. Also, it is really bad if they are positioned in direct sunlight, near vents, heaters and other items or locations that can influence the temperature.

You likewise won’t want to place it underneath the rock level, as it will not be as accurate at that point. The LCD is likewise best displayed straight on, so you need to position it where it can be viewed easily.

Best Thermometer for Aquarium

Picture	Aquarium Thermometer	Type	Link
	Zacro Digital Aquarium Thermometer	Digital Aquarium Thermometer
	RISEPRO Digital Water Thermometer For Fish Tank	Digital Aquarium Thermometer
	JW Pet Company Smarttemp Thermometer Aquarium Accessory	Non Standing/ Standing Aquarium Thermometer
	American Thermal Instruments Aquarium Thermometer	Stick On Aquarium Thermometer
	General Tools AQ150 In and Out Aquarium Thermometer	Digital Aquarium Thermometer
	SUKRAGRAHA Traditional Stick-on Digital Temperature Thermometer	Stick On Aquarium Thermometer
	Digital Thermometer and Hygrometer for Terrariums and Aquariums	Digital Aquarium Thermometer

Discussed in this segment are some of the top-notch thermometers that work great for any fish tank. With any of these gadgets, the temperature in your fish tank will be most effective.

Best Aquarium Thermometer Reviews

1. Zacro Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature

It is important to have an aquarium thermometer if you own a fish tank so as to guarantee that the fish are staying comfortably and have the correct temperature that is optimal. A thermometer for aquarium should give you the exact readings of the temperature.

This is the reason why you need to invest in one of the best digital aquarium thermometers like the Zacro Thermometer for the ideal temperature checking. The thermometer comes with LCD display feature that is quite simple to read. It shows the temperature readings either in Fahrenheit or Celsius depending on which one you found easy to use.

You can rely greatly on this gadget for exact temperature readings. It gives you temperature readings within the scope of 0.1 degrees. The range of temperature for the aquarium thermometer is -50°C and +70°C. The working temperature is -10°C and +50°C.

To get the best result, the probe should be submerged into the tank to gauge the water temperature. You don’t need to submerge the aquarium thermometer, only the probe. The gadget isn’t too huge, and it has a conservative design that allows for tactful usage. Making use of the suction cup is likewise simple to sustain it.

Pros

• Compact design
• Suction cup is easy to use
• The thermometer is simple to operate
• The LCD display unit is easy to read
• Gives exact temperature readings
• The temperature can be read in Celsius or Fahrenheit

Cons

• Accurate but slow

2. RISEPRO Digital Water Thermometer For Fish Tank

Do you need a thermometer for your tank? The digital water thermometer by RISEPRO is a great option for you. With regards to the ease of use and performance, the thermometer beats different models available. You can rapidly set it up in some minutes by just mounting the display kit in the aquarium and after that, put the sensor probe inside the water. This thermometer comes with two parts which have suction cups that ease the mounting process.

This is an adaptable thermometer that functions admirably with various kinds of fish tanks and water. It doesn’t make a difference if you are utilizing fresh water, marine water, tap water and salty water in your fish tank, the gadget will function admirably and give you the exact water temperature reading.

This aquarium thermometer is precise and gives a wide range. It gauges from -58°F to +158°F with a precision of +/-1°C. You can decide to make use of Fahrenheit or Celsius temperature units. In case you have reptiles like lizards and turtles, this thermometer will function admirably in checking their living temperature in the aquarium.

Pros

• Comes with suction cups for simple installation
• Very affordable – you receive two thermometers
• Provides additional batteries
• Wide range of temperature, which makes it exceptionally useful for any kind of fish tank
• Can show temperature both in Fahrenheit and in Celsius

Cons

• No alarm and alert feature
• While affordable, it is still expensive than the floating and LCD stick-on types

3. JW Pet Company Smarttemp Thermometer Aquarium Accessory

In case you are searching for something that isn’t high tech or digital, the aquarium thermometer by JW Pet Company is a reliable choice with no fancy odds and ends. This thermometer has a green safe area that shows an ideal range of temperature.

The special design of this aquarium thermometer consolidates a thermometer with a magnetic substance. This device goes into the fish tank and the magnet goes outwardly to keep the smart temp immovably in place, it doesn’t require suction cups. Concerning precision, we can say with certainty that the temperature of the water is shown with a low error margin, if any, presumably + or -.2 °F and the smart temp comes with a large and easy to read numbers.

Also, the Fahrenheit is placed on a white screen background alongside a “green safe zone” zone in the center. Reading temperature is quite simple, the visibility on the aquarium thermometer is clear. The general construction of the aquarium thermometer is of great materials and quality, the lodging is built with glass and the plastic fins. We aren’t sure of what they used to measure the weight of the fins, but it functions admirably, it does sink and remains sunken.

Nowadays, it is quite difficult to get good thermometers for the aquarium, they either break easily or are inaccurate, this aquarium brand, however, despite the fact that is produced in China, appears to be well made and is expected to last for a long time.

Pros

• Accurate
• Works fast and excellent
• Works well even with intense currents
• It is easy to move when necessary
• Simple to read
• The magnet efficiently keeps it in place

Cons

• Temperature readings may turn out to be inaccurate after long period of use

4. American Thermal Instruments Aquarium Thermometer

In case you are purchasing a thermometer for your aquarium, you should be completely focused on getting a device that gives an accurate temperature reading. One great thermometer that can’t let you down with regards to precision is the American thermal thermometer for aquarium.

This is a very compact and easy-to-carry aquarium thermometer that uses touchy color changing fluid crystals. It is very easy to read the temperature because the device is properly calibrated. The aquarium thermometer functions admirably and reacts promptly to the water temperature when clung to the fish tank. You can decide to position it beneath the waterline or outwardly of the fish tank. You have to put the thermometer on the fish tank and press it solidly to hold it in place.

Unlike other LED aquarium thermometers, this device is pretty much easy to monitor and read. It is built with huge figures that make reading simple. The thermometer is likewise designed with every temperature pointer in a different formulation carried out under strict laboratory specifications.

Pros

• Gives accurate reading
• It sticks well
• It has touchy color changing crystals
• Very easy to read
• Affordable

Cons

• Not precisely accurate because it gauges the glass temperature

5. General Tools AQ150 In and Out Aquarium Thermometer with Waterproof Probe

This aquarium thermometer is really a great choice to go with and one of the best thermometers on the market today. It can gauge temperatures as moderate as -58°F to 158°F, or -50°C to 70°C. It can be utilized to effectively gauge the temperature of water in both saltwater and freshwater tanks, so you don’t need to worry about corrosion or rusting.

To make things simpler for you, this device comes with both a maximum and minimum memory. It likewise features a low and high-temperature alert which you can adjust to the temperatures you need an alert for. However, this helps you to keep up a steady temperature in your fish tank in order to keep the inhabitants healthy and alive.

This aquarium thermometer features a modern design which is amazingly sturdy and dependable. It also comes with a smart foldaway stand which save you from always holding it. In addition, it has backdrop illumination for those dark periods as well. The jumbo display of this thermometer makes it simple to operate and read constantly. It really enables you to change forward and backward between remote and ambient sensing. It likewise has a suction cup which enables you to easily set the sensor inside the fish tank.

Pros

• Ambient and remote sensing
• Comes with a suction cup and stand
• Backlit for easy reading
• Can be switched from F to C
• Min and max memory function
• Works for freshwater and saltwater
• Low and high temp alerts

Cons

• Temperature readings may turn out to be inaccurate after long period of use

6. SUKRAGRAHA Traditional Stick-on Digital Temperature Thermometer

For a simple way to check the water temperature in your aquarium, turn to the SUKRAGRAHA Aquarium Thermometer. It’s straightforward peel and stick configuration can’t get any simpler to install and removes the mystery from whether your fish are in good condition or not.

These aquarium thermometers are really a life saver for ensuring that the water temperature doesn’t get excessively cold or hot. They work consummately and the temperature usually displays very clearly.

Another great thing about this thermometer is that you don’t need to replace them anytime you wash or rinse out your tank. You don’t need to put water specifically on the strips since they will eventually get wet. You can just dry the device off using a towel and they are fine. They do not come separated or unstuck.

Pros

• Appears accurate
• Easy to read
• No guesswork
• Reliable
• Inexpensive
• The temperature displays clearly

Cons

• Difficult to read without shiny light

7. Digital Thermometer and Hygrometer for Terrariums and Aquariums

This is an exceptionally unique but useful thermometer choice to get for your aquarium. This device is quite a hygrometer, which implies that it can read the level of humidity in the air. This is one reason why this model is preferred by most aquarium owners since it can be utilized for turtle and terrariums habitats to gauge the dampness level in the air.

Obviously, in the meantime, it likewise functions admirably for measuring the temperature of water in the tank. What is really awesome about this device is that you can cling the thermometer outwardly of the aquarium and it will make use of special digital reading methods to gauge the water temperature within.

To connect it, you need to simply evacuate the defensive cover and cling it on anyplace. It utilizes a special kind of gum to cling on, one that doesn’t leave residue or stains and can still be re-stuck in another direction. This thermometer accompanies a convenient LCD display unit that is vast and simple to read. Also, it can switch between F and C to meet your requirements. It may not be completely submersible inside the water, but rather, it has a tough external shell and can deal with getting sprinkled or misted with water for a long timeframe.

Pros

• Water resistant and durable
• Accurate readings of humidity
• Digital display is easy to read
• Provides readouts in C and F
• Good for temperature and humidity readings
• Easy to mount and use on the outside of terrariums and aquariums

Cons

• Not completely submersible
• Battery life not good enough
• Works great for humidity than temperature

How to Use Digital Aquarium Thermometer

Generally, the thermometer is often used to record the temperature in your aquarium water. At times, you can as well constantly monitor your temperature and you will be alerted whenever the temperature rises or drops over your chosen temperature range or setting.

In a situation whereby you have a large tank, you can easily make use of several thermometers to monitor different parts of the aquarium. Simply ensure that the display is convenient to view for you to be able to know the temperature immediately.

Where to Put Stick On Thermometer in Aquarium

Stick on thermometers are most widely used in a freshwater aquarium. They are often offered as a feature on the latest aquarium package. When making use of LCD thermometers, there exist few tips to be followed.

1. Do not put them in an area where they will get in contact with direct sunlight, or any area close to a cooling or heating vent. Aquariums shouldn’t be put in areas such as these anyways.
2. Do not put the thermometer beneath the ground level, as this will influence the accuracy of the reading.
3. Finally, the thermometer does provide the best reading when it is viewed straight on, therefore place it properly. If you have any reason to twist your body in order to see the thermometer display, it is not in an ideal area.

How to Read Aquarium Thermometer Sticker/ Strip

Some amphibians and fish are to a great degree sensitive to changes in temperature and can endure or even die whenever the water is excessively hot, excessively cold or fluctuates. A strip indicating adhesive temperature tells you the hotness of the water by showing on the thermometer three different colors. Since each color shows different temperature, any individual who hasn’t operate a temperature strip before may not be able to get the accurate readings. One color is the correct temperature, while the rest shows a temperature that is either cooler or hotter than the correct temperature.

Stage 1

Clean the exterior of the aquarium by making use of aquarium-safe glass cleaner, or simply water. Try not to make use of standard glass cleaners or soap as the chemicals used in making this product may tend to contaminate your water. Thoroughly dry the aquarium with the use of a towel. Make sure that the glass is totally dry.

Stage 2

Peel the plastic backing off from the strip by firstly placing the strip on the tank exterior, beneath the uppermost water level. Make sure that the strip is free of bumps and smooth.

Stage 3

Check the strip after around 15 to 30 minutes. Three colors with each having a number will be observed. Green shows a correct temperature. While violet or blue shows a temperature that is beneath the accurate temperature. The tan or red color shows a temperature over the accurate temperature.

Conclusion

One of the essential tools on the mother earth for both tank owners and fish is the Aquarium thermometers since it tells the temperature of the water. This is simply because you generally need to keep the temperature of the water at a reasonable level for the fish. There are three essential kinds to pick stick-on, floating/standing, and digital.

However, the most preferred kinds are the digital aquarium thermometers. The digital thermometers reviewed in this are almost the same, and they are quite a great choice. But if we should pick one, it would be the Zacro Digital Aquarium Thermometer. The LCD display is somewhat better compared to the other options reviewed here. In addition to the fact that it’s the number top rated seller makes it a great choice.