Fish Profile

Do Glofish Need Heater In Their Tank

The temperature of your tank or aquarium is a significant factor in the comfort and prosperity of your fish. Many of us know abundant ideas about filter, tank, kit, lighting but the heater in the tank is still overrated. In comparison to people and different vertebrates, fish don’t deliver their body heat. Likewise, glofish need a heater in their tank. They should depend on the temperature of the water to keep up their internal heat level.

If you are not sure if your glofish needs a heater in the tank then yes glofish needs one. The heater is a basic component for any glofish type. There are numerous utilizations for heater warming, as it guarantees the prosperity of the glofish and different plants kept in a tank. Glofish typically needs a heater since it maintains a steady temperature. Glofish comes from warm native so it is obvious that it needs a heater.

In a tank, the water temperature is a deciding element in gathering the physiological necessities of the glofish. It guarantees the development and growth of these species and any plants that decorate the tank. In this article, I will guide you about whether glofish need a heater in their tank or not if they need why, and what type of heater is best. I hope you read till the end of this page to get an answer to your queries.

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Here’s Why Nearly All Glofish Need Heater In Their Tank

A tank heater is a gadget useful for fishkeeping to warm the temperature of water in the tank. The most tropical freshwater tank is placed up at temperatures that range from 22-30 °C (71-86 °F). On the off chance that you are keeping glofish, you will require a heater.

A heater safeguards that a tank doesn’t get too cool and that the temperature remains consistent throughout the day, in any event when the room chills (e.g., around evening time). For many fish, a temperature of 78°F is ideal.

Glofish comes from a warm water type so glofish needs a heater in their tank. They need to grow properly and feel like their natural habitats like south river basins in South America and India. So, the heater is mandatory equipment for glofish. The heater maintains a constant water temperature.

About Glofish In Short

Glofish is a playful and splendid fish type. Due to its uniqueness and alluring feature, many fish owners are after it. Zebrafish were the first glofish discovered in quite a while, and are currently found in brilliant red, green, orange-yellow, blue, pink, and purple fluorescent colors.

Glofish do not get heat in their body so glofish needs a heater in the tank. The Glofish is a hereditarily altered zebra danio that comes in a few diverse colorful shadings, for example, red, green, orange, blue, and purple. You would now be able to find different glofish types in different forms.

Glofish Type And About Their Temperature Preference

It is a type of fish with numerous numbers. The GloFish is a licensed and reserved brand of hereditarily designed fluorescent fish. A wide range of glofish is available now everywhere to purchase.  Different glofish need different temperature preferences accordingly.

Glofish type includes tiger barbs, black skirt tetra, zebra danios. Most of the glofish variety need a heater for staying healthy and warm to expect danios but some owners prefer adding a heater for danios as well.

Black Skirt Tetra

This variety is similar to a typical glofish. This is a functioning fish that swims in medium and low tank water layers.

The fish is ideal for network tanks; however, they may turn out to be less dynamic if not kept in gatherings sufficiently huge.

This fish is sensitive to cold temperature so they need a heater that maintains the temperature.

What Type Of Heater And Temperature Is Best For Black Skirt Tetra?

They prefer a warm environment inside the tank so I think the ideal water temperature would be 72 to 82 degrees Fahrenheit with a 50-watt heater in a 10-gallon tank and a 100-watt heater in a 20-gallon tank. Black skirt tetra prefers submersible heaters.

Zebra Danios

Zebra Danios are commonly those fish found in amphibian tropical conditions the world over, including both freshwater and saltwater species. 

Fish keepers regularly keep zebra danios fish in freshwater and saltwater aquariums. Zebra Danios are probably the most wonderful animals in the water which need a heater to grow, survive, and get warmth.

 What Type Of Heater And Temperature Are Best For Zebra Danios?

Hotter temperatures would expand their digestion and abbreviate their life expectancy. For a Zebra danios fish tank, keeping a warm ecological temperature going somewhere in the range of 75 and 80 °F (24 to 27 °C) empowers the fish to grow. Zebra danios prefer a submersible heater and immersion heater.

How To Set Up A Heater In The Tank For Glofish?

Here are the steps to set up a heater in the tank for Glofish:

Placement Of The Heater

Firstly, think about the correct position for your heater inside the tank. Then, place your heater close to a filter inlet or outlet since it guarantees warmth circulation.

The closer you place your heater near the filter will help to circulate the heater acceptably. This process will help to keep your tank warm. Put your submersible heaters on a smooth level close to the lower part of the tank for the best outcome.

Size Of The Heater

Secondly, choose the right size of the tank heater. Simply place the tank at room temperature so that the temperature remains constant. Keep your tank far from direct sunlight since it increases the temperature of the water. Dip your heater inside the tank and make sure the wire is connected to the socket.

Finding The Correct Heater Length Tube

The heater keeps up the ideal temperature reliably in the tank; which thus helps with expanding goldfish’s life expectancy. Glofish are tropical fish, they without a doubt need warm water in the tank. You should find the heater length tube according to the tank size.

Setting Up The Heater

As you probably know that glofish does not like being around cold water; so, it is consistently a good choice to keep the water somewhat excessively warm than marginally cold. Glofish need water in their tank so set up an A-grade heater.

Now, check with the manufacturer’s suggestions for introducing and situating your heater. The heater should be set for at any rate 30 minutes to be certain the temperature has equalized before connecting the heater.

Check And Monitor The Temperature Change

Before connecting the heater, additionally, check the tank temperature to decide if the water should be warmed or not. For this, you will require a different thermometer which helps to check and track water temperature. After you check the temperature for glofish is accurate you can add them inside the tank.

After, you have set up the heater inside the tank. Check if there is any crack in the heater, turn the light of the heater to check if it’s working. Finally, place a heater in the tank.

What Should You Do After A Heater Setup?

When the heater is set up, verify whether the marker light is on. Your heater needs to have a marker light (generally red or orange) to demonstrate whether the heater is presently warming. If the warmer (heater) is on, turn the indoor regulator control down cautiously until the pointer light turns off.

Do this if the water temperature is highly cool. Leave the heater for about thirty minutes and afterward return and check the temperature. Keep your room temperature cool.

If the tank actually should be heated up, check if the marker light on the heater is off or on(active)  and afterward cautiously turn the indoor regulator up until the light turns on.

When the light goes ahead, leave the heater for another half hour or more. If the temperature is still too cool after the half-hour, repeat this method. On the off chance that the temperature is excessively warm, follow the subsequent stage like turning off the light because sometimes light produces heat.

You can also use a cooling fan to bring the temperature down in the tank. After the heater setup, you can add other equipment like a filter, led light, and decoration items in the tank.

 Heater Varieties For Glofish

The heater is an important one for species to keep themself warm so there are numerous heaters including hanging, submersible, small, medium, and large. I know you might be confused after all every heater works the same but you are not sure. Actually every kind of heater functions accordingly. Glofish need the heater in their tank as other warm-water species need. Glofish is not cold water fish.

Immersion Heater For Glofish (Hanging Heaters)

The immersible heater is the type of heater which can be hung rather than dipping inside water. This type of heater is different from a submersible one. Hanging heaters are intended to loom over the side of the tank like how a filter holds tight the side of the tank. The warming component itself holds tight within the tank.

The controls for the warming contraption should be in the right manner on the part that sits outside the tank for simple access. Like the submarine heaters referenced before, try to keep the water level higher than the heater so as not to harm it.

List of some immersion heater for glofish

Circulation Heaters:

This type of heater is stainless. It is very useful for heating the water for the fish tanks. Circulation heaters are ground-breaking, electric in-line heaters built of a screw fitting or rib mounted cylindrical radiator get together introduced into a mating tank or vessel. Non-pressurized or exceptionally pressurized liquids can be warmed viably utilizing direct flow warming.

Flange Heaters:

This type of heater is made up of sheath materials which are resistant to corrosion and is stainless. Flange Heaters accompany diverse sheath and spine materials, distinctive working voltages, power (kilowatts) appraisals, and temperature ranges.

For electrical associations, the flanged heaters additionally comprise terminal boxes of various kinds. Each type recognizes its appropriateness to various situations, for example, a soggy working climate.

Submersible Heater For Glofish (Suitable One)

The submersible heater is the type of heater which is completely submersible in the tank water. Since these heaters are totally sub, they are by and large more productive than the hanging aquarium heaters. These heaters can be set genuinely low in the water.

The submersible heater is a type of heater which can easily dip into water and heat the water in a short time. There are a plethora of submersible heaters for glofish so choose accordingly. This type of heater is more suitable for the glofish than the immersible one.  So, I want to list a submersible heater for glofish:

Aqueon Aquatic Flat Heater, 15 Watts:

Keep your fish pleasant and hot with the Aqueon Aquatic Flat Heater. This smaller heater works for glass and acrylic aquariums up to 10 gallons in size and will securely raise water temperatures to 6°F above the surrounding temperature.

The complete submarine plan introduces effectively with the included pull cups and is accessible in 7.5W and 15 W sizes. Your fish will be swimming lovely in the superbly warm waters of their tanks.

Benefits of Aqueon Aquatic Flat Heater, 15 Watts

  • Easy to install.
  • Submerged design.
  • Warms water up to 6 Degree Fahrenheit.

Hydor THEO 150W (UL) Submersible Aquarium Heater, 150 Watts:

With the complete Sub Theo heater, you can keep it anyplace in your tank.  This type of heater is shatterproof under ordinary aquarium circumstances. For use in freshwater and saltwater tanks. The 25-watt model is wise for tanks between 2-7 gallons. Hydor Theo heater is also known as an automatic heater since it has a switch that can turn off the heater itself when the tank gets hot.

Benefits of Hydor Theo 140w submersible aquarium heater,150 watts.

  • The resistance to shattering.
  • Reasonable price.
  • Do not have a problem with dry running.

Aqueon Pro 100 Submersible Aquarium Heater:

Benefits of Aqueon Pro 100 Submersible Aquarium Heater

  • The resistance to shattering.
  • Submersible.
  • Indestructible.

Aqueon Pro 200-Watt Submersible Aquarium Heater:

Aqueon Pro 200-Watt Submersible Aquarium Heater works to convey reliable warmth. Every unit is made with a solid warm plastic shatterproof lodging and outfit with an electronic indoor regulator. The indoor regulator has an auto closed off outstanding capacity, when the highest point of the heater inclines beneath the lower part of the heater, it will turn off automatically.

Benefits of Aqueon Pro 200-Watt Submersible Aquarium Heater

  • Balance temperature between 66-78 degrees F.
  • Durable Heater.
  • Protects Overheat.

Hydor THEO 300W (UL) Submersible Aquarium Heater:

The THEO heater has all the fundamental capabilities for keeping up your tank’s water temperature correctly and reliably. Including protected warm innovation (PTC) which makes it among the most secure aquarium heater lines available and is UL Listed by the plan, not by the utilization of embellishments.

Produced using exceptionally designed shatterproof glass which, while not solid, is intended to oppose breakage in most typical tank cases or circumstances. Profoundly exact because of the utilization of exact miniature switch innovation. The elite innovation and the high caliber of the hydro heater ensure durable and helpful capacity.

Benefits of Hydor THEO 300W (UL) Submersible Aquarium Heater

  • Easy For Temperature Management.
  •  Resistible Glass.

Pros And Cons Of Heater For Glofish

Even though you have a heater for fish it does not mean your problem is over, yet the problem arises according to the heater type so let me give you some advantages and disadvantages of having a heater. The heater does not harm any fish type but some low-grade heater quality will end up creating a problem.


Like I said above about submersible heaters and why it suits best for glofish. It has a variety of good points and advantages. Let me give you a list of good points regarding the submersible heater:

  • Provides warmth to fish.
  •  Most heaters are affordable.
  • Keep water temperature steady.
  • Provides accurate heating for fish.
  • Have a warranty. (depends on heater quality).


Every heater does not have good features. Let me give you a list of bad point regarding the submersible heater:

  • Sensitive fish might get burned.
  • A low-quality heater will burn the entire tank.
  • Needs more space in the tank.
  • Might not heat the water completely. (depends on heater quality)
  • Waste of energy in general.
  • Uses a lot of electricity.
  • Heater explosion accidents can occur.

Where Can I Place A Glofish Heater?

There are many heaters in the market and they can suggest a variety of spots. You have to choose the best spot for your heater in your home or shop. You should first do little research about heaters and should find the best heater for glofish.

As glofish need a heater in their tank they are fond of the submersible heater. It’s up to you to know about the place for your heater. Everyone should know that spot near the other tank equipment is best.

I want to say that you have to place the heater safely.

Here’s Where You Can Place Your Heater

It is not like that submersible heater is only suitable but most commonly submersible is divine one for glofish. Keep your heater as near the power cable as possible. The water momentum helps with opening the glow plug from the heater to the part of the tank, so preferably the heater should be put directly close to the filter for the greatest flow.

Place a thermometer in a corner inverse the heater to ensure the warmth is arriving at the opposite side or all sides of the tank. Place your heater essentials in a vertical position, while other pieces of equipment can set down on a level plane.

If possible, I suggest setting the heater at a 45-degree point to get the best warmth transfer. You can hide the heater by setting plants and decoration items before it or covering it in a sump(hollow) like container if you have one. If your heater is submersible then place it dipping inside the water carefully and near the electricity socket

How To Know That My Heater Is In Normal Condition?

First, off if your heater is normal then there is no problem. Since the heater is also a basic component in the tank. It is necessary to check the heater condition. The heater helps to keep the entire tank warm.

To find out whether your heater is fine then, first, check if your heater produces unnecessary sound then it is not in normal condition. In this way, you can check your heater condition. I will tell you more ways to check if your heater is fine or not below.

Normal Working Heater Feature

If your heater is fine then it will surely warm the water. Sometimes your heater can stop working so be sure to check by dipping your hand inside the tank to see if the water is warm or not.

Firstly, if the heater is in normal condition then, you can see the sign like a red or green light in the heater point if it’s working.  If you see light in the heater then it is normal. If you do not see the light signs then it’s more likely you have an issue with a heater here. However, some heaters do not have this feature so first be sure if your heater has light or not.

Likewise, if there are no water leaks in the water heater then your heater is in normal condition. Following this, you can know the condition of the fine heater by checking whether the condition of the water is also normal and clean since a broken heater can make water rusty and smelly. A normal heater does not create such a water issue.

You must buy a quality heater not second-hand.  Finally, you can check the instructions given in the outlet while buying the heater to check if it is normal. If the heater is not normal use your backup heater or buy a new heater with upgraded quality.

How Much Does A Glofish Heater Cost?

It is better if you know the price of the heater for glofish or any other fish. The lowest price of a heater is nearly around $7.94 and 72,000 watts separated by 1000 watts for each kilowatt = 72 kilowatts for every month. 72 kilowatts times 12 pennies for each kilowatt = 8.68.64 dollars per month to run a 100-gallon 400-watt tank heater. On a normal of 11 hours out of every day in general.

The price of the heater depends on quality if you want to buy a cheap one then you can get one. You can buy a heater at an average price but purchase a high-quality one. Since cheap price heaters tend to get broken or damaged fast.

Heater such as a submersible is affordable while the substrate heater is quite expensive. Cost depends upon watts for the heater and the type of heater. As glofish fit for the submersible heater so the price is also reasonable.

As you know for glofish buy submersible heaters which cost around  $11.30 to $20 which is affordable since other heaters like substrate and immersion cost around $ 40 to $70.For glofish, I would highly recommend choosing the submersible one or you can also choose a substrate heater or any heater you like. Heater price varies from country to country.

Affordable Heater For Glofish

Yes, you can get an affordable heater for glofish from any market but it’s good if you choose the best and reasonable one. GloFish will require a heater to keep them remain solid and dynamic. Danio is a freshwater fish species that is the solitary type of glofish but you can keep it in an unheated tank but a glofish heater is like a necessary element.

You can also choose to buy a glass-eater heater which costs around 5 dollars or buy a titanium heater for 4 dollars only. Glofish comes from warm water like comfy and mellow rivers in South America, and they should be in a warm tank to match their regular habitat.

For your glofish warmth, you can buy heaters such as Hydor Slim Heater for Bettas, Bowls, and Aquariums, Aqueon Aquatic Flat Heaters 5 Watts, etc. These types of heaters are very affordable and are of high quality. These types of heaters are also durable if taken care of properly. Aqueon Aquatic Flat Heater and Hydor Slim Heater can take care of your glofish in a warm way by making them feel joyful.

Safety Measures  For Glofish Heater

Once you have a final setup of your heater it is necessary to be aware of heater fire. One of the common and dangerous threats is heater fire in the tank will kill fish and destroy the tank in a second. It is your job to look at the temperature of the ideal tank according to the fish type. Also, be sure about tank-type whether it is saltwater or freshwater.

Key To Keep Your Heater Safe

In the case of glofish since it is freshwater species, you have to clean your water in the tank. Follow the care schedule for the fish tank. Unplugging the heater during water changes also prevents your heater from catching fire.

First off, do not use a broken or second-hand heater. Choose the quality heater which will protect your fish, tank, and heater. Follow the instruction for the installation of the heater. Make sure you don’t mix water and electricity which results in a fire so buy good quality underwater types of equipment.

If you want to know if your heater is working is by checking the temperature of your water. Start by setting the heater at a higher temperature than the water. For example, if the temperature of the water is 34 degrees, set your heater to 40 degrees.

Then you can know if the temperature is constant or not. This helps you to check your heater condition and work on it. Knowing this helps you to maintain the temperature of your water or check temperature settings and set it accordingly. Never turn the heater on unless it is completely submerged in water.

The best option is you can also buy an automatic heater which switches off automatically after heating water. This makes it safe. Also, have a backup heater by chance if your heater break.

Bottom line: Heater plays a vital role in the life of every freshwater species so be careful to choose a quality one.

Related Article,


Which Is The Best Heater For My Glofish?

Aqueon Pro Heater, EHEIM Jager Aquarium Thermostat Heater, ViaAqua Titanium Aquarium Heater are the best and solid ones for your glofish. Go choosing for affordable and best heater type.

How Can I Know That My Heater Is Working?

Check different signs like, if the light turns on, is the water warming up, and so forth. You can utilize light to enlighten the water stream around the aquarium heater. If a heater is working, it will obscure everything close to it like a fire so you may see the water development under the light.

Does Heater Lead To Burning My Glofish?

Heater fire is commonly very common cause it does happen occasionally. In some cases,  the tank divider and the heater will catch or stuck the fish, or a genuinely inactive fish will pick the heater to lay on which leads to burning your glofish. If you keep the heater safely and follow instructions about heater installation then you are less likely to get this problem. Gas leaking is the main cause of the heater explosion which leads to burning fish.

Does Glofish Live Without A Heater?

As you know glofish are freshwater fish and it is clear that they need a heater to keep themselves warm. Not only to keep them warm but heater keep them active and healthy. Glofish needs a heated tank. The water inside the tank will be probably chilly so they need a heater.

In Nutshell

I think you have now learned a lot about heater setup. One thing to keep in mind is that when the temperature of water increases in the tank you can turn off the heater. If turning off the heater does not work then you can lower the temperature of the water. Make sure your tank doesn’t have direct sunlight. In summer it is important to look after your tank and heater condition because of the hot climate.

Finally, I would like to end my article here by saying that if you are petting a fish or other species it is important to choose a wise heater. I would suggest you buy the above-mentioned heater for your fish to keep them warm throughout the day and night. Hope this article is beneficial for you.