Neon Tetra

Maximum Water Temperature For Neon Tetras

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If you are thinking of getting Neon Tetras, you should follow the various ways for their better care. Among many ways, following a proper water temperature for them tops the list. But there is a certain doubt in minds of people regarding the exact water temperature required for them. Hence, in this article, I will be explaining the accurate maximum water temperature for Neon Tetras.

So, what is the maximum water temperature for Neon Tetras exactly? The maximum water temperature for Neon Tetras is 78 degrees Fahrenheit (25 degrees Celsius). Also, neon tetras require a water acidity or pH level of 6.2 maximum. It is extremely crucial to manage water temperature accurately. Otherwise, the Neon Tetras will have difficulty not just to thrive but also to survive. 

An Absolute Maximum Water Temperature For Neon Tetras

The Neon Tetras are tropical freshwater fish. So, to house them in an aquarium, absolute maximum water temperature is necessary. It is the most required thing for keeping the Neon Tetras safe and sound.

Especially if you are a beginner fish keeper, you should not miss this. And learn the right maximum water temperature for Neon Tetras more precisely.

Learn more about neon tetras in our article, ‘Neon Tetra: A Complete Care Guide For Beginners.’

The absolute maximum water temperature for Neon Tetras is 78 degrees Fahrenheit (25 degrees Celsius). Also, a maximum of 6.2 pH levels is ideal.

As they are tropical fish, neon tetras need a higher water temperature to grow and shine better. This is compared to the average room temperature in an aquarium.

But remember, the water temperature should not exceed by 78 degrees Fahrenheit. The Neon Tetras indeed require a bit higher water temperature. But more than the requisite temperature will be risky for them.

If you want to learn more about Water Parameters for Tetra Fish: Stable Water Condition, then click here.

What Will Happen If The Water Temperature Is Higher Than Absolute Maximum Temperature?

The Neon Tetras can finely live up to the water temperature of a maximum of 78 degrees Fahrenheit. But if the temperature rises than the maximum level, the Neon Tetras can be at risk. And of course, you would not want to.

If the water temperature is higher than the absolute maximum temperature, the water will get too warm. Such water is not safe for Neon Tetras. They will start feeling discomfort and gets very dull.

Also, the metabolism in the body of the Neon Tetra will speed up quicker. It further leads to the shortening of their life expectancy, or they may die sooner. Besides, there will be a high possibility of developing some life-threatening sickness too. It is because the Neon Tetras will lack in appetite, which can later affect their body harshly.

Hence, maintaining absolute water temperature for the Neon Tetras are vital for their healthy growth.

You can increase the horizon of your knowledge about Tetra Fish Diseases and Treatments here.

How To Control The Water Temperature Precisely?

As stated before, the Neon Tetras should be in an aquarium with absolute water temperature to live finely. If you fail to provide an accurate water temperature to them, they can suffer through severe life-threatening conditions. So, it is crucial to control the water temperature precisely without any error.

For this, here are some ways that you can obtain to control the water temperature more precisely:

Aquarium Heater

Being a tropical freshwater fish, the Neon Tetras need accurate water temperature in the aquarium. For this, an aquarium heater is suitable to control the often fluctuating water temperature.

In the aquarium heater, there is a mark that indicates how high the water temperature should specifically get or limit. You can then set the temperature limit in the heater.

Later, if the water temperature fluctuates, the heater will work and reach up to the specified mark. Also, it manages the water temperature without exceeding the temperature mark.

But remember, set the water temperature only up to the maximum level that the Neon Tetras requires.

In this way, the aquarium heater can help to control the fluctuating water temperature. Thus, you can get an aquarium heater to ensure a pleasant environment for your Neon Tetras.

I suggest you get AQQA Mini Submersible Aquarium Heater. It is the best in the market at an affordable price.

Aquarium Thermometer

An aquarium thermometer is as vital as the aquarium heater. A thermometer helps to detect the exact water temperature at any time.

If the thermometer shows any fluctuation, you can know the change happening in the water temperature. Later, the heater will start working too, which keeps the temperature under control. Therefore, the aquarium thermometer is necessary to control the water temperature in the aquarium.

Fish Tank Thermometer, Touch Screen Digital Aquarium Thermometer with LCD Display, Stick-on Temperature Sensor ensures Optimum Temperature in your aquarium for the neon tetras.

Requisite Temperature While Changing Water

As you decide to keep Neon Tetras, you should know they prefer clean water to grow accurately. So, cleaning the tank by changing the dirty water often is something you should do regularly.

But do not forget that the Neon Tetras are sensitive towards the water changes. Hence, you should carefully perform the whole process of changing water without troubling or scarring the fishes.

While changing the water in the tank, learn that you should only change a certain percentage of the water from the tank. Besides, you should maintain an accurate water temperature. Note the temperature of the tank and freshwater before water change.

Keep the temperature of fresh water as close as the temperature of the aquarium. Also, learn that you should only change 20 percent to 25 percent of the water from the tank. Changing the whole water from the tank can make Neon Tetras uncomfortable.

Here, the maximum water temperature necessary for Neon Tetras is 78 degrees Fahrenheit. So, the freshwater must hold a temperature above 70 degrees Fahrenheit. Plus, do not pour the whole 20 percent to 25 percent of freshwater at once.

Gradually add them to the tank. It will help Neon Tetras to stay relaxed. Later, the restored water can gently mark up to the maximum water temperature.

Extra Points To Consider With Maximum Water Temperature For Neon Tetras

As you maintain the absolute maximum water temperature, here are some points that you should not avoid:

  1. While managing the maximum water temperature for Neon Tetras, do not forget to maintain the pH level of 6.2 maximum.
  2. The Neon Tetras require a medium level of water hardness. Meaning, the water should not contain too many dissolved minerals.
  3. While water change, do not go for more than 25% of freshwater. Otherwise, it can be distressing for Neon Tetras.

Check out more about ‘How to Increase the pH of Your Freshwater Aquarium?’


At present, many fish keepers prefer the Neon Tetras, which adds shine to their aquarium. But as they are tropical freshwater fish, they require a suitable water temperature for their proper health and better growth.

For this, you must know and provide a maximum water temperature of 78 degrees Fahrenheit to the Neon Tetras. It would amount to 25 degrees in Celsius. But the water temperature can fluctuate more often, which is unsafe for them.

So, to know and control the water temperature accurately, get an aquarium heater and thermometer.

Therefore, I conclude the article over here. I hope you knew about the maximum water temperature that is necessary for Neon Tetras.

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  3. What Do Neon Tetras Need In Their Tank?
  4. Can Neon Tetra Survive In Cold Water?
  5. How to Prevent Neon Tetra Curved/Crooked Spine or Neon Tetra Disease

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