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Home » Fish Tank Guide » How to Read a Fish Tank Thermometer

How to Read a Fish Tank Thermometer

May 24, 2021 Leave a Comment

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How to Read a Fish Tank Thermometer

How often do you measure the temperature of the water in your fish tank? Do you understand the importance of this task?

Reading a fish tank thermometer may seem like quite a confusing task; however, we are going to teach you everything you need to know. Reading this thermometer is essential because it tells you the specific details of the tank’s temperature.

Table of Contents

  • Why Is it Essential to Measure the Water Temperature in Your Fish Tank?
  • Reading Fish Tank Thermometers
    • A Fish Tank Thermometer Strip (LCD)
    • Floating Aquarium Thermometers
    • A Digital Thermometer
  • What Are the Pros and Cons of These Types of Thermometers?
  • The Final Reading

Why Is it Essential to Measure the Water Temperature in Your Fish Tank?

The temperature is critical because it has an impact on the health and well-being of these creatures. Various types of fish, the majority, in fact, are extremely sensitive to changes in the water temperature.

Reading a thermometer is required so that your fish can remain stable and thrive in their tank. Inadequate water temperature may have adverse effects on the health of your fish.

Usual temperature variations are often moderate and slow, in their natural habitat. This differs in a fish tank. You can expect rapid, quick, and sudden changes in an aquarium environment.

The thermometer gives you the opportunity to evaluate and assess the situation, as well as react appropriately and on time. 

Reading Fish Tank Thermometers

The three types of thermometers we are going to discuss are:

1. A fish tank thermometer strip (LCD).

2. Floating aquarium thermometers.

3. A digital thermometer.

A Fish Tank Thermometer Strip (LCD)

Readings are taken from a thermometer strip. You can stick this strip onto the exterior of the tank. From there, it is going to measure and display the water’s temperature.

Fish tank thermometer strip

It is not a complicated process because it operates the same way a normal thermometer would. People can often see the temperature in both Fahrenheit and Celsius.

You can break down the process of reading this into three simple steps.

Step 1

Clean the tank’s outer glass. Make sure to wipe down the area where you are going to stick the strip on. This surface also needs to be dry so that the adhesive works.

Step 2

Take the strip out of its’ packaging. You often have to peel off a piece of plastic from the back of the strip as well. There is a sticky surface area here that needs to be stuck on the glass of your tank.

Step 3

Stick the strip onto the tank’s exterior glass surface. Ensure that you do this in a smooth and even manner. Wait for approximately 30 minutes to get the best results.

There are often color markers next to the various temperature degrees. These colors give you an indication of what you need to do to correct the temperature.

Floating Aquarium Thermometers

Floating aquarium thermometer

These differ from a regular thermometer strip as they are placed inside the actual fish tank. There are also various forms of these strips, such as:

  • Thermometers that float on the water’s surface level.
  • Those that stick to the inside of the tank with rubber suckers.
  • The thermometers hang on the wall with a clip.
  • Floating thermometers sink to the bottom of the tank due to their weight.

These products are very accurate as they use a secure zone color marker. This marker tells the temperature of the water. It is easy to tell whether the temperature is correct because of the color marker.

This sits inside the water so you can easily see the color, which tells you if you are in a safe zone or not.

It is common to experience problems with these thermometers. They often break easily as they have to constantly remain in the water. External temperatures do not affect the reading at all.

A Digital Thermometer

Aquarium digital thermometer

A digital device is a more modern way to determine the water temperature in the fish tank. These products have a probe that connects to the thermometer’s digital display. This tells you how hot or cold the water is while using a chord.

You dip the probe into the water. You can place the display out of the tank when you read the temperature. Some types of these thermometers connect the probe and display wirelessly. You can use a rubber sucker to attach the display to the outer area of the fish tank.

This digital display means that you require batteries to operate the device. Other products require you to use a wall connector so that you can run the thermometer using your property’s electricity.

More expensive models often have an audible alarm. This helpful feature notifies you when the temperature rises above a specific limit or when it drops too low.

Additionally, outside temperatures do not impact the device because you dip the probe directly into the water in the tank.

You are going to find that these thermometers combine all the positive features of the abovementioned products. The downside to this is that it is relatively more expensive than other thermometers.

What Are the Pros and Cons of These Types of Thermometers?

Each product has its’ own advantages and disadvantages. One may offer what the other does not; hence, you need to find the most appropriate and suitable option for your fish tank.

Fish Tank Thermometer Strip

The advantages include:

  • It is affordable.
  • They do not break easily.
  • You can place them in different locations of the tank.
  • They are user-friendly.

Disadvantages include:

  • They are not easy to read when there is not adequate lighting.
  • These thermometers do not alert you when there is an issue with the water temperature.
  • They are not as accurate as other thermometers, such as digital ones.

Floating Aquarium Thermometer

The pros of these products are:

  • They have a safe zone, which is easy to view.
  • These thermometers are not expensive.
  • External temperatures do not affect the thermometer’s reading.
  • You can place it in various locations inside the tank.

The cons include:

  • They break easily.
  • It is not always easy to read the scale because it is small.
  • You do not get an alert when there is something wrong with the water temperature.
  • It is not as accurate as digital thermometers.

Digital Thermometer 

The benefits of this type of thermometer are:

  • You can take the reading in any location of the tank – this can be done with a single meter.
  • The surrounding room temperature does not have an impact on the reading.
  • They do not break.
  • You can read the temperatures very easily.
  • The thermometer gives you an audible alert when the temperature is incorrect and needs to be adjusted.
  • They often provide the most accurate readings.

The disadvantages include:

  • It is the most expensive fish tank thermometer on the market.
  • The majority of these devices need batteries in order to operate – this means additional costs.

The Final Reading

An LCD thermometer, floating aquarium thermometer, or a digital thermometer? Which one is it going to be? The process of reading a fish tank thermometer is not challenging concerning either of these devices.

You need to find the most convenient option for you because reading a thermometer is a crucial component of owning fish. Regularly checking up on the water’s temperature does not have to be a tedious task if you make use of any of these products.

It is time to ensure that your fish are living the best and healthiest lives while swimming around in the ideal water temperature.

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