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Do Guppies Need Heaters

A common tropical fish kept in homes worldwide, guppies are inexpensive to buy and easy to take care of. That’s why they’re often given as gifts or purchased by people who aren’t familiar with fish.

If you have guppies, you know how enjoyable they can be to watch as they splash and swim around in their aquariums. The guppy lovers always asked the question that do guppies need heaters. In this article, we will answer this question.


Do guppies need heaters?

Sometimes the water of the fish tank might get too cold, which can make it hard for guppies to stay healthy. If this happens to your guppy fish, you may need to invest in a heater to keep them healthy and swim strong all winter long.

Because of temperature fluctuations during winter, many guppy owners need a heater to ensure that their fish survive until springtime comes.

Finding out whether or not you need a heater is easy, all you have to do is check your local water conditions. If your water temperature stays below 75℉ and you are experiencing problems with your guppy’s health, then your guppies need a warm environment to live. And it might be time to invest in an aquarium heater.

The best part about owning an aquarium heater is that they keep your fish healthy and happy which gives you more time to enjoy them instead of trying to figure out what’s wrong with them.


Where do I put the fish tank heater?

Most people who own fish tanks know to put their tank heaters near their filters. But many don’t take it one step further and install them inside of or under their tanks.

A lot of pet store tanks have built-in heaters that rise from out of drains at the bottom of each tank—but in most cases, these aren’t sufficient enough to keep your fish alive over time.

Instead, put your heater under or inside your tank so that you can ensure your fish always stay warm and happy throughout all seasons.

It’s not just about keeping your water temperature constant; an effective heater will also increase oxygen levels within your tank by moving heated water closer to its surface. Keeping these things in mind is key when choosing which type of fish tank heater works best for you.


How can I prevent my guppy from getting burned?

After getting the answer to this question “do guppies need heaters”, the next point comes to our mind how can we prevent our guppies from the heat of aquarium heaters.

First, it's worth noting that guppy burns usually occur from leaving heaters on overnight. To keep your guppy from getting burned, you need to make sure all of your heaters are completely off at night.

But even if you follow every step to ensure that no heater is ever left on overnight, you may still need to give your guppy a heater depending on their temperature preferences.


How to check that your Guppy likes warmer or cooler water aquariums?

Some guppies prefer a warm environment, while others prefer cooler water. The easiest way to find out what your guppy prefers is by watching them!

If they stay near or under a heater during daylight hours but retreat into darker corners when it gets dark, then they likely enjoy warmer temperatures. If they spend most of their time far away from any heat source during both day and night, then they probably prefer cooler temperatures.

You can also check with a pet store employee or do some research online to see if there are other ways to tell whether your guppy enjoys warmer or cooler water.

Once you know how hot/cold your guppy likes its water, then you can pick up an appropriate heater and adjust accordingly. Make sure not to use a heater above 78℉; guppies can only survive so long without oxygen.


Different types of heaters

As you already find the answer to the question “ Do guppies need heaters?”. Next, we need to choose the best heater for our fish aquarium. There are several different types of heaters you can use to heat your guppy tank. Each has its pros and cons, but all will work.


1. Submersible aquarium heater

The most common types of aquarium heaters are submersible heaters. These heaters are made up of a floating element (which is what creates warmth) and a casing to support it. These heaters can be used in fresh or saltwater environments and generally come with separate dials to adjust the temperature.

With these heaters, you simply fill your fish tank or water source with warm water and place your heater inside—the element will float at whatever temperature you set on your dial and create warmth for your aquatic pets.


2. Immersible heater

Immersible aquarium heaters keep your fish tank at a certain temperature. They are generally less efficient than other types of fish tank heaters, but they also tend to be less expensive. An immersible aquarium heater is a good option for you if you want an inexpensive, hassle-free way to regulate your water temperature.

To use one, simply place it in your tank and plug it in. The device will do all of the work for you! You’ll need to regularly check that it’s submerged properly and that there aren’t any leaks—but otherwise, these devices are very easy to use.


3. Filter heater

A filter heater is a device that helps keep your fish tank’s water temperature at an optimal level. It will help maintain that ideal water temperature while you’re not around.

Actually, it is a key item you need to have in your fish tank, as this will keep the water at the right temperature at all times, making it more pleasant for the fish and helping to prevent disease outbreaks among them.


4. In-tank electric heater

In-tank heaters are popular because they don’t get in your way and they’re easy to adjust. However, fish will often bump them as they swim by and kick up debris that gets lodged in small spaces inside them, reducing their life span.

Since there’s so much oxygen suspended in water, it helps to prevent tiny flame particles from turning into sparks when bumps cause electric shock—something that is especially important if you have children around your tank!



If you own guppies, you probably don't have to worry about them getting too cold—that is unless your fish tank isn't as warm as it should be. If your water temperature drops below 68℉, your little critters could suffer from something called cold water shock. Symptoms include labored breathing and lethargy, and if left untreated, they can die within two days. To avoid cold-water shock and keep your guppy friends safe all winter long, you need a heater for a guppy tank.

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