Best Aquarium Heater 2020 – Review & Buyer’s Guide

No doubt, an aquarium at your home adds to the beauty of your little world. Similarly, having the best aquarium heater for your aqua buddies is also a great investment. It keeps them moving happily in the fish tank which is a much more wonderful feeling.

Of course you need to take care of your fishes if you want to see them moving with good health. As we know, they need a stable water temperature and a suitable environment to live.

So! how can this be possible?

This is where the need for the best Aquarium heaters is felt. The aquarium heaters are mainly designed to keep the water temperature steady in order to let your fish live a healthy life.

aquarium heater

The heaters that we are going to review assure safety and comfort to your fish. They are the top-rated aquarium heaters because they are not only easy to adjust but have longer lifespan. As they come up with warranty as well. They keep the water temperature in aquarium as stable as possible.


Best Aquarium Heater

Let’s have a look at our heaters for fish tanks and their awesome characteristics.

Aquarium Heaters RATINGPRICE
Tetra HT Submersible Aquarium Heater ⭐⭐⭐⭐⭐ Check Price
The Cobalt Aquatics Flat Neo-Therm Heater ⭐⭐⭐⭐ Check Price
Eheim Jager Aquarium Thermostat Heater ⭐⭐⭐⭐⭐ Check Price
Fluval E Electronic Heater ⭐⭐⭐⭐ Check Price
Aqueon Preset Heater ⭐⭐⭐⭐⭐ Check Price
Orlushy Submersible Aquarium Heater ⭐⭐⭐⭐⭐ Check Price
ViaAqua 300-Watt Quartz Glass Heater ⭐⭐⭐⭐ Check Price
Tetra 26445 Fauna Aquatic Reptile Heater⭐⭐⭐⭐⭐ Check Price
Mylivell Aquarium Heater ⭐⭐⭐⭐⭐ Check Price
Hydor Submersible Glass Aquarium Heater ⭐⭐⭐⭐⭐ Check Price
Marineland Precision Heater ⭐⭐⭐⭐ Check Price
ISTA In-Line External Aquarium Heater ⭐⭐⭐⭐ Check Price
Finnex Hang-On Electronic Aquarium Heater⭐⭐⭐⭐⭐ Check Price
U-pick Aquarium Heater⭐⭐⭐⭐ Check Price
JBJ Automatic Top Off Water Level Controller ⭐⭐⭐⭐⭐ Check Price


1: Tetra HT Submersible Aquarium Heater – Very Adaptable

Are you trying to buy heaters for aquarium that has adaptability along with many other features? If yes, then we guarantee you to be in the right place.

We present you the best submersible aquarium heater. That is at the top line of the best aquarium heaters with a number of unique qualities.Tetra HT Submersible

Well, who would not want to go for an cheap and stylish aquarium heater. That can be installed vertically or horizontally both ways?

Its small footprints make it possible to hide behind plants and makes it the perfect heater for fish tanks.

Adding to the ease, this aquarium heater has indicator lights. These lights let you know about the intensity of temperature.

When it is heating, the light flashes red but as soon as the proper temperature is achieved then it turns green.


For your comfort, this heater automatically maintains water at 78° F which is perfect for most tropical fish. And to your surprise, if ever an electric shock happens then this tetra HT will shut off for safety purpose.

  • Durable
  • Automatic Temperature Adjustment
  • Small, Easy to Conceal
  • Affordable Price
  • Automatic Safety Shut Off if Short is Detected
  • Fully submersible
  • Can get Damaged if Over Used
  • May not Work Properly in Tanks Over 55 gallons


So, get your hands on this affordable and handy aquarium heater. That can work perfectly in tanks up to 55 gallons. A heater that cares for your pet’s life and comfort.It is surely one of the top rated aquarium heaters.

2: The Cobalt Aquatics Flat Neo-Therm Heater – Shatterproof Glass Design

If you are in search of a modern, high quality submersible aquarium heater. Then Cobalt aquatics flat Neo-therm heater is the best option for you. It has a super-plain design that is fully submersible.

And similarly, it has a modern design for energy saver Aquarium and glass container heating.This water heater includes reversible holster/bracket, which allows the heater to face inside and outside of the tank. The Cobalt Aquatics Flat Neo-Therm

Best of all, it has a solid one touch system. With just a  touch of your fingertips, it can set the temperature between 66-96°f in a very simple manner.

In case you forget to turn it off, The Neo therm will switch it off automatically.

At the top of everything, let us tell you a good news that we are offering 3 years warranty. It is nearly unbreakable because of the practicality of its design.

The Neo-therm is a resin/thermoplastic heater that is totally different from other common heaters. plus, its outer layer is crack proof which is a great feature to its safety.

Moreover, Cobalt values the Neo-therm heater on its power of raising temperatures above 11°f. So you will never have to worry about over usage of the Neo-therm or taking care of it.

And yes, how can we neglect the safety part. It provides ultimate safety and reliability. Built-in heat protection circuits prevent the heater from overheating.

  • Modern Design
  • Super Flat Thus Adjustable
  • Fully Submersible
  • Safe and Reliable
  • 3-year Warranty
  • Automatic Shut off (if overheated)
  • Shatterproof Glass
  • Can stop working if over used
  • Suction Cups Could be Stronger


So, stop thinking and surprise your fish with warmer and comfortable heaters for fish tanks. Get the best aquarium heater that is easily adjustable with a shutter-proof glass.

Let your fish enjoy the cozy and warm aquarium with the warranty of 3 years. Marineland always provides you wonderful fish tank heaters.

3: Eheim Jager Aquarium Thermostat Heater – High Quality

Here we present a fully submersible Eheim jager aquarium thermostat heater. The Eheim Jager comes with a heat safety control that protects it against running dry. That is why, it is the best fish tank heater ever.

Eheim-Jager-Aquarium-ThermostatAnd yes, it definitely cares about your pet.As the water level goes too low, the heater will automatically turn off.

At once, its TruTemp dial adjusts the heater within a +/- 0.5F degree accuracy  for precise temperature controls.

In addition, it is made of shock resistant and shatter proof glass for fresh or marine water.

In case, you might be thinking about the monitoring. There is no need to worry. This aquarium heater has an On/Off indicator light for monitoring that makes it easy to keep an eye on it.

The Jäger TruTemp adjustable water heater is an ultra-modern electronic thermal device offering today’s best technology. And it is designed for use in both freshwater and saltwater aquarium.

At the top of everything, this heater is made with laboratory-grade glass. TruTemp, the most reliable aquarium heaters are free of pollutants and are resistant to chemical and biological substances.

It has the ability to bear severe temperature variations. Their glass jackets provides equal heat distribution as a result of expansion of the heat surface.

Moreover, the heater will turn off if removed from the water but will resume functioning again when put back in water. Which is the best option among all.

  • Easy to use
  • Fully submersible
  • Perfect for Fresh and Salt Water Aquarium
  • Automatic Shut Down
  • Unique Temperature Dial for Easy Setting.
  • It’s a bit long
  • Having this horizontally can sometimes make it harder to access controls


To be honest, Eheim jager aquarium thermostat heater is one of the most liked and reliable heaters. Being an underwater heater, it is very easy to use and monitor.

Its automatic shutdown and light indicator are safety features that adds to its worth and makes it the best aquarium heater.

4: Fluval E Electronic Heater – Reliable

Easily, it is one of the most popular aquarium heaters on the market. This fully submersible Fluval E electronic heater is the best aquarium heater that is available in 100, 200 and 300 watts respectively.

Thus, this feature makes it ideal for the range of tank sizes. Furthermore, it is built with a secure slim body that can be adjusted or removed without taking it off its bracket.Fluval-E-Electronic

The Fluval E Electronic fish tank heater allows for precise temperature settings in 0.5 degrees rise between 68 and 93F.


What if you could lift the heater at various angles, so you can make it easy to view the front screen? Yes, its mounting bracket feature has made it possible for you now.

Sounds good? But that’s not all. Technologically advanced, it uses a microprocessor with dual sensors. Clearly, it provides real time water temperature through its LCD display.

And off course yes, it has a safety turn off if the water levels get too low. And a built-in fish guard and glass sleeve always protects your fish from coming into direct contact with the heater.

  • 5 Years Warranty
  • safety Shut off Technology
  • Gives  live Temperature Readings
  • Integrated Guard Always Protects your Fish
  • Warns You if the Flow is not Adequate
  • A little expensive than other heaters


so, what else do you want? This is certainly the recent advancement in safety and technology with a 5 year warranty. The Fluval E Heater makes it very easy to maintain a safe and stable environment for your fish (pets).

So get this amazing top aquarium heater for your aquarium.

5: Aqueon Preset Heater – Durable and Reliable

Believe it or not, we are here with a totally submersible and crack proof heater for aquarium. Not to mention, the original temperature is set to 78 degrees and is fit for many tropical fish. In addition, its LED indicator light displays when actively heating which definitely adds to its worth.

Aqueon-PresetAnd the best of all, the automatic safety shut-off helps in avoiding overheating and damage. Certainly, this shows its concern towards your water species.

Moreover, it has 1 year warranty and 100 watt is recommended for 20 and 30 gallon aquariums.

And what to worry about, when it needs no adjustment?

The preset temperature has been set to 78°which is best for most tropical fish. Aqueon preset Heaters can be placed at a horizontal or vertical angle in your tank.

The fully submersible aquatic heater is made of shatter-resistant quartz glass and is almost unbreakable.

  • Top quality heater
  • Completely submersible
  • Shuts off automatically
  • Very durable
  • Most reliable aquarium heaters
  • Adjustable temperature setting
  • Shatter resistant
  • Temperature value is not easy to read
  • Requires the water to flow well to give an excellent result


So, what is the best aquarium heater?

Of course, The Aqueon preset heater that is fully submersible and easy to use. Who wouldn’t go for something that is easily usable. Besides, it has an automatic shut off for added safety of your fish’s small world.

6. Orlushy Submersible Aquarium Heater – Both Salt and Fresh Water Heater

Were you waiting for a fully submersible heater for fish tank that is suitable for 50 to 80 gallon aquariums? If yes, then your wait is over! We have come up with a 300W aquarium heater with 11 inch length.

A 110 to 12V Voltage and a 6ft power cord that is perfect for your 50 to 80 gallon tanks.

This aquarium heater is definitely going to suit your tank as it comes in wide range of sizes and watts according to your aquarium’s size.

Orlushy-SubmersibleAnd guess what?

It 2mm thick quartz glass protects against explosion all the time. This heater can be used in fresh and salt water aquariums.

Moreover, it is easy to hide in the tank that allows to keep the beautiful look of the aquarium.

For your ease, it has an area to adjust the temperature. That area can be turned and adjusted easily at small intervals. Its precise temperature dial from 68 to 89F allows full control of aquatic climate within a 1- degree contrast.

How can we neglect the safety of our aquatic species? It has an automatic shut off when the temperature is reached. So that is how it comes in the category of top aquarium heaters.

  • Completely submersible
  • Reliable
  • With 6 foot power cord
  • Universal heater for marine, freshwater or tropical aquarium
  • Automatic safety shut down
  • Shatter resistant glass
  • Provides uniform temperature
  • Can be damaged if overused
  • Temperature fluctuation can be a problem sometimes



So stop thinking and just rush. Go get the best aquarium heater which is fully submersible. Being a universal aquarium heater for marine, freshwater or tropical aquarium with shatter resistant glass.

The heater that provides normal and uniform environment to your little friends. It has all the features of the best water heaters for aquariums. You don’t need to search for fresh water aquarium heaters now, as this heater is for all.

7.  ViaAqua 300-Watt Quartz Glass Heater – Break Resistant

Do you want to have a heater for aquarium that has a simple installation system and is fully submersible? Of course yes, who would say no to such a good aquarium heater?

Here we present ViaAqua 300-watt high quality quartz glass submersible heater with a clear temperature setting. That is perfect to use in fresh or salt water aquariums.


I know what you are thinking about. The size, No? Let us tell you that you don’t have to worry about this at all.

ViaAqua submersible heaters are available in a variety of sizes. You can choose one according to the size of your aquarium.

And we definitely care about your ease. As, it has visible temperature settings and provides suction cups for securing to the aquarium.

Moreover, it has break resistant quartz glass construction that saves it from breaking.

Indeed! it is great because it has waterproof double insulation and power lamp to indicate on/off cycle. And these features definitely make it the best aquarium heater.

  • Easy installation
  • Fully submersible
  • High quality
  • Break resistant
  • Can be used in both fresh and salt water
  • Can get damaged if not properly used
  • Overheating can be a problem if not used with care


Sounds great, No?

So, just go and get yours. Get this trusted aquarium heater that is submersible which is easy to install and use. Having a high quality break resistant glass and an indicator adding to its safety feature.

Don’t delay, hurry and get this aquarium water heater. Surprise your fish with this as a token of care.

8. Tetra 26445 Fauna Aquatic Reptile Heater – Compact and Fully Submersible

Are you in search of aquarium heaters that are mainly made for aquatic reptile environment? Then here you are.

We are here to introduce Tetra Fauna Aquatic Reptile 100W heater that is especially designed for frogs, Newts and turtles etc. It has an amazing solid structure that is easily adjustable in aquariums.

Tetra-26445-Fauna-AquaticThe automatic thermostat feature maintains water temperature at 78F. Which in turn keeps the environment pleasant for your reptiles.

Moreover, it comes with two over-sized suction cups that provides safety to your moving reptiles and saves them from any danger.

In addition, this heater is best for up to 30 gallons of water.

Above all, the best of all. Tetra fauna aquatic heater has features of top aquarium heaters like the protective shield that keep your pets safe.

It has a protective plastic cage to prevent breakage. And guess what? The protective plastic cage has openings so that the long 8ft cord can easily be moved in any direction. Which in turn, will allow more comfort to the setup.

  • Safety against breakage
  • Automatic thermostat feature
  • Fully submersible
  • Proven
  • Compact structure
  • May not work properly if not completely submersed
  • Fluctuation of temperature can be a problem if not set properly


So, take the next step!

Go ahead and get this absolutely safe, firm and efficient fish tank water heater. Seriously, it is the best aquarium heater for tanks up to 30 gallons and also has an automatic thermostat quality.

No doubt, it is an aquarium heater that has protection features for the life and safety of your fish. And is absolutely the best fish tank heater as well.

9. Mylivell Aquarium Heater – Auto Adjustable Thermostat

To begin with, here we introduce you to the Mylivell aquarium water Heater. A fully submersible, modern  auto thermostat heater with adjustable temperature option. Hence, it has the most trusted circuit to ensure the heat maintenance inside the tank.

. MylivellAs we care for you and your living species in tank. Our fish aquarium heater will keep your tank at a controlled temperature.

In addition to that, it will definitely provide your fish a happy and healthy environment. Apart from this, it is considered perfect for 20 gallons tanks as it is a 100W heater.

Yes! safety and ease comes above everything.

The Mylivell water heater for fish tanks has two suction cups. They are used for attachment to the fish tank and the temperature can be adjusted automatically.

It has a polarized plug that helps to avoid any electric shock. And wait! the display? That is extremely easy to read. In short, it is safe and convenient.

In addition, It is suited for both fresh and salt water aquariums. Consequently, it provides a stable temperature that can be set between 20-30C (68-93F).

  • Sustainable
  • Innovative design
  • High quality
  • Fully submersible
  • Convenient and safe
  • Suitable for fresh and salt water
  • May not work properly in plastic tanks
  • Not for big tanks


Now, it’s your turn.

Give it a go. Get an under water heater that has a modern design with best safety and ease features. A heater that provides stable temperature, and safety against electrical shock. We make sure to provide you the high quality aquarium heaters.

10. Hydor Submersible Glass Aquarium Heater – Shatterproof

Is it a problem for you that your aquarium heaters stop working when they are dry? No worries, we are here to solve your problem by introducing you to the Theo Heater.

A heater for fish tank that functions with the exclusive PTC technology. This means, that the heater is definitely not going to break or damage when run out of the tank or water.

Hydor-Submersible-GlassAdmit it!

We all want things that has all what is required. The Hydor submersible glass aquarium heater has all the demanded features.

These features are required for safe and accurate temperature maintenance of the water in your aquarium tank.

Simultaneously, it includes suction cups that makes it easy to adjust the heater in the tank.

Besides, this aquatic heater can be placed horizontally, vertically or full submerged. Its shock resistant feature has added more to it.

Moreover, it’s a shatter proof heater that has high resistance and prevents the glass from breaking.

  • Shock resistant
  • No damage in case of running dry
  • Submersible
  • Graduated scale
  • Vertical and horizontal positioning
  • Reliable
  • High resistance: shatter proof heater
  • May not work properly in tanks too big for it


So, what’s stopping you?

Just get up and  get an aquatic heater with a shatter proof glass that can be easily adjusted horizontally or vertically.

And above all, It is the best aquarium heater that doesn’t get damaged when runs dry. So, bless your aquatic chums with the best and get one for your aquarium.

11. Marineland Precision Heater – Precision of Temperature

Are you worried about the temperature maintenance of heaters for aquarium? Here we are, to solve your problem. Let us introduce you the 200 watt Marineland precision aquarium heater that is best for up to 55 gallons.

It has an adjustable temperature dial that allows you to set the temperature 1 degree with every click. Besides, its thermal Switch turns off by itself when temperature rises above an internal preset and turns on again once it cools down.

Marineland-PrecisionMoreover, it has high visibility temperature display. Additionally, it has an advanced heating feature that contains a mica center surrounded by a mesh heating element for better heat transfer.

With great durability, it keeps your water at the normal temperature.

Of course yes, it is safe as temperature can be viewed easily. This aquarium water heater is available in 8 sizes that range from 50W to 400W.

Because it is affordable, you can even buy two small aquarium heaters to use in a big tank.

  • Submersible
  • Precise control of temperature
  • Automatic shutdown when overheated
  • Automatic on/off thermal switch
  • Available in 8 sizes
  • Temperature can be viewed easily
  • May not work properly if not fully submersed
  • Glass may not be shatter proof


So, what are you waiting for?

Get your fish the precision saltwater aquarium heaters that are completely submersible and has automatic shutdown features. The heater which has advanced mounting brackets that are attached to the glass.

It also provides 3 window positions to observe the temperature display.

Keep yourself and your water beings at comfort by getting the Marineland precision aquarium heater. Get this high quality and best water aquarium heater.

12. ISTA In-Line External Aquarium Heater – Best External Heater

Do you really want to get the best aquarium heater for your fish meanwhile afraid for them being burnt? If yes, then take a deep breath because we are here to introduce ISTA INLINE External Aquarium heater.

This heater is fits externally rather than inside the tank. As a result, the heater is suitable for anyone who uses sump or canister filter. Therefore, there is no chance that it can put your fish’s life in danger inside the tank.

So consequently, the external aquarium heater is the best selling water heater for fish tanks so far.

ISTA-In-LineSounds great?Let us tell you more about it.

ISTA In-line external heater comes in a number of sizes. We are focusing on the large 500W model that heats a tank of 65 to 130 gallons.

One can buy less powerful heater according to the aquarium size.

Moreover, it comes with two sensors;first one on the inlet and the second one on outlet to keep an eye on temperature.

In addition, it is easy to install and doesn’t cover space in the tank as it is an external design. The automatic power off safety system builds up its value.

  • External, thus doesn’t occupy space in the tank
  • Easy to set
  • Available in different range of voltages
  • Auto shut off feature
  • Easy installation
  • High quality heater
  • Can get cracked after a couple of years
  • Sometimes overheats (if overused)


So, Go ahead and buy a safe and high quality aquarium heater for your tank. Grab this external aquarium heater and remove the chances of danger to your fish’s life.

13. Finnex Hang-On Electronic Aquarium Heater – Corrosion Resistant

If you are in search of a useful aquarium heater that works effectively with its stunning features. Then you are in the right spot. We are proud to bring forward Finnex Hang On electronic controller aquarium heater.

This heater consists of titanium tubes that works against rust or decay. And thus makes the heater unbreakable for salt water or fresh water aquariums.

ISTA-In-Line-External Aquarium HeaterFurthermore, the Finnex hang on heater is 500 watts and is completely suitable for 100 to 120 gallon tanks.

It comes from 100 watts to 500W. One can get any by keeping in mind the size of their aquarium.

Thinking about the temperature? No worries, because The Finnex hang on aqua heater keeps water temperature within +/-2ºF of the set value which  provides a secure and moderate temperature to your aquarium.

Not enough?Here is more to it.

The super fast titanium tubes are easy to hide as they are small in size. It also contains a precise control with hang on hook. In addition, the heater has LED indicators that helps you know when the heater is operating.

  • Safe
  • Reliable
  • Corrosion resistant tube
  • Indicators to let users know about its functioning
  • Compact, thus easy to hide in the tank
  • May not last as long as other models


what else do we want in water heaters for aquariums? play you part now. Get the Finnex hang on electronic best aquarium heater.  It also have an amazing feature of being made of titanium tube which resists corrosion.

And yes, who can ignore the fact that it is compact and can obviously be hidden in the tank. As a result, it helps you keep on with the perfect look of your aquarium.

14. U-pick Aquarium Heater – With Extra Thermometer

Here we are with a good news for aquarium water heater users! Ever used U-Pick Aquarium heaters?

If yes, then BOOM!

Because we have introduced an IMPROVED VERSION of U-pick aquarium heater that works continuously, by upgrading its functions and life span. Now it works more efficiently and accurately.

U-pick Aquarium HeaterSafety?

Yes, The upgraded version comes with a stronger Quartz glass. It is reasonably shatter proof, explosion proof and avoid electricity leakage.

Moreover, the stronger protective vessel is upgraded for Anti-melting double sealed substance that provides safety against burning your pets.

Thus, This water heater for fish tanks proves to be of high quality and the best underwater heater.


And you know what the best part is? It provides one FREE spare thermometer to help the users observe the precise temperature and prevents it from overheating or freezing. Furthermore, the U-pick Aquarium heater automatically turns on/off to reach the setting temperature constantly.

That’s not all!

Our best aquarium water heater is fully submersible heater for aquarium that is designed for different tank sizes, from 3 gallons to 80 gallons.

One can easily choose a suitable power according to their tank size. The 300W heater is the best aquarium heater for up to 40 gallons fish tanks.

  • Relatively safe
  • Precise temperature control
  • Provides one free thermometer
  • Available for different tank sizes
  • Better heat transfer
  • Fully submersible
  • May not last longer if not used properly


Think about it!

Isn’t it worth buying? The U-Pick fish tank water heater has all that you need. An aquarium heater that cares about your aquatic species. Also it includes an extra thermometer that helps you view the accurate temperature of your tank.

Its high quality suction cups allows adjustable installation and its automatic turn off/on feature adds more to its amazing characteristics.

15. JBJ Automatic Top Off Water Level Controller for Aquarium

Have you ever wondered what is the best aquarium heater? how would it be like to have a water level controller for an aquarium, that is ALL IN ONE?

Here you go! We are glad to bring forward the JBJ automatic top off water level controller for aquarium that is absolutely one of its kind.

BJ Automatic Top Off Water Aquarium heaterWe have come up with a professional level product that is equipped with two float detectors. They operate within seconds when the water level drops low.

Moreover, it refills your aquarium and helps it to reach its pre-determined point. Thus, it helps you keep the water level constant.

Adding to its brilliant features,

The controller empowers two ways of operation with three different set up scenarios.

And no worries, your fish’s safety is our first priority. The JBJ water level controller assures safety and comfort to your aquatic beings.

  • Automatic refilling
  • Durable
  • Safe and Reliable
  • Works with both fresh water and salt water
  • Floating sensors
  • Can be operated in two ways
  • May not last longer if not used properly


So, don’t wait!

Go and get yours. Get your tank a device that is the most advanced water level controller system. undoubtedly it works great and helps your fish stay happy and healthy by providing them the adequate level of water in the aquarium.

Its float sensors that works within seconds in need is really something to be admired. Hurry! And get the best aquarium heater controller for your tank that your little chums really need.

Buyer’s Guide:

Here are some of our guidelines for those who intends to buy aquarium heaters.


Ever since the aquarium has been introduced. As a result, there are a lot of aquarium equipments that keeps on coming in the market.

Similarly, Fish tank heaters is a technology that is designed to maintain the temperature of water in tanks consistently. There are different types of electronic heaters introduced with a variety of specifications.

Different Sizes:

Some are submersible others are not. The heaters comes in a wide range of sizes, one can choose it according to the size of the tank. Some heaters are In-sump as they can be installed in your sump system to save space.

Different shapes:

There are heaters that are susbstrate, they consist of heating coil. Most of the aquarium holders prefer to have either submersible or In-line heaters as they are more suitable options. Moreover, Some heaters are flat others are in tube form.

As there are various types of heaters. You may take help in the selection of heater by reading each aquarium heater review, that will help you know about the heater more.


When it comes to choosing the best aquarium heater for your tank. importantly, one must consider the size of aquarium tank one has. These heaters for aquarium come in different sizes and Watts.

If one has a big tank then he should go for a heater with high Watts. So that the required heat and temperature is provided to the fish in tanks.


Different in size:

Some heaters are small and easy to hide behind the plant in aquarium. If one is concerned about the look of aquarium, then compact water heaters for aquariums are the best choice for them.

If you are too much concerned about the safety of your fish then fortunately, you can buy an external aquarium heater.

Don’t forget to get saltwater aquarium heaters for salt water aquariums and fresh water aquarium heaters for fresh water fish tanks. You can also get heater that does well with both water tanks. For more information, you may read aquarium heaters reviews while selecting the heater for your tank.


It is suggested to keep the aqua heater near the water flow. It can be placed near the outlet or inlet from the filter. Placing it near the water flow will make it easy for heat to spread easily throughout the water tank.


Fish tank heaters should have some important features; most importantly make sure you check these features before making up your mind to buy any heater. An aquarium heater should be completely submersible.

It should have a shatter proof glass that prevents it from breaking. Similarly, check if its explosion proof, if yes then go for it. If the aquarium heater is of larger Watts then it’s definitely more powerful.

Have a look at the thermostat. It’s the place where you choose the correct temperature (if you have the option to do so). And lastly, the temperature.

Check whether the aquarium heater you are buying has preset (fixed) temperature or you can change or select the temperature from range. The latter is the best option. The heater having these features are the best aquarium heaters.


Always try to keep your aquarium clean to avoid algae from gathering in your tank. It sometime holds back the heater to work properly.
Buy the best quality heaters for fish tanks, if you want the heater to work efficiently.

Avoid placing your aquarium somewhere where it is exposed to sunlight directly. Direct contact with sunlight can affect the temperature moderation. And yes, don’t forget to replace your heater once a year to make sure everything operates properly like an efficient and good aquarium heater.

Lastly, choose the best aquarium heater that is according to your tank size. Otherwise it won’t work according to your expectations.


Sometimes you want to buy the best and high quality heaters for fish tanks but your budget doesn’t allow you to do so. But no worries, It isn’t a big issue because we have aquarium heaters that are reasonable in price and you can have an amazing heater even in a low price.

All you have to do is to be willing to look for it in the market.

Frequently asked questions:

Here are some of the questions that are most frequently asked by the customers.

How much electricity does an aquarium heater use?

Heating an aquarium can prove quite expensive because it depends on your tank size. The bigger the tank, the more heat is needed which means that similarly more electricity is spent on turning the temperature up.

 Can we keep the heater on in a fish tank?

YES! You can keep the heater on 24/7. It automatically turns off when it reaches the specific temperature and meanwhile keeps the water temperature within a few degrees of required settings.

How many heaters do I need in my aquarium?

Smaller aquariums needs small heaters. Like a 10 gallon tank usually needs 25 to 75 Watt heater. On the other hand, bigger aquariums may require many heaters. So, it basically depends on your tank size.

Do aquariums need heaters?

Well, if you have tropical fish, you will definitely need a heater. As for many tropical fish
78F temperature is perfect. Thus, the heater makes sure the tank doesn’t get too cold. And in short, keeps the temperature mild for the whole day.

Are fish tank heaters safe?

If you are cautious and take all the precautions carefully, then definitely, it is safe. But! always keep one thing in mind that you need to unplug the heater before cleaning or changing the water. Otherwise, it might result in the cracking of glass or it can put your fish’s life in danger.

What type of fish do not needs heater?

Cold water fish easily survives in low temperature water. Similarly, if you keep gold fish as a pet in your aquarium then luckily, you don’t have to worry about anything. They do not require a heater and can do well in cold water easily.