An aquarium heater is a device that you will use in your aquarium and will warm the water in your aquarium. Moreover, they are ideal when you want to keep your fish and other marine life in warm environments. In detail, the majority of these freshwater and marine aquariums are set to maintain temperatures that will range from 22-30 degrees Celsius. In general, today there are different types of aquarium heaters that include glass immersion heaters, underground heating. Of late, there have been heating mats that may be placed under your aquariums.


Best Aquarium Heater Review

10. ViaAqua 200-Watt Quartz Glass Submersible Heater 

 ViaAqua 200-Watt Quartz Glass Submersible Heater  | Aquarium Heater

VivaAqua best aquarium heater is of high quality, and the materials making it such as break resistant Quartz glass are of high quality. Installing it is effortless and straightforward. Notably, temperature settings are visible and hence will not give you a headache.

In addition to this, this aquarium heater is also available in different sizes, and this will give you the liberty to select your preferred heater according to the size of the aquarium. Namely, the suction cup is also included to secure the heater in the aquarium.

Features
  • High Quality, Break Resistant Quartz Glass Construction
  • Fully Submersible
  • Simple Installation

Related post: Best Submersible Water Pump For Aquarium In 2020


9. VIVOSUN 300W Aquarium Heater Submersible Titanium Fish 

VIVOSUN 300W Aquarium Heater Submersible Titanium Fish  | Aquarium Heater

You will have the total control of your aquarium heater since it will come with precise temperature control that will easily control the temperatures of this heater. Setting up this heater is easy, too, since you will only have to submerge it vertically or horizontally.

Additionally, your safety is also guaranteed since the materials making the heater are IP68 rated and have the best waterproof levels. Likewise, this aquarium heater has CE, FCC, and ROHS certification, and the plug has a UL certification.

Features
  • Easy operation
  • Adjustable temperature
  • Anti-flaming heater cover
  • Double sensing probes


8. Cobalt Aquatics Flat Neo-Therm Heater

Cobalt Aquatics Flat Neo-Therm Heater | Aquarium Heater

Cobalt Aquatics Flat Neo-Therm Heater features a design that makes it more energy-efficient. In further, it also comes with a reversible holster/ bracket that allows the heater to face inwards easily or outwards your aquarium.

Another advantage with this heater is that it comes with a one-touch system that allows you to set the temperatures between 66-96 degrees Fahrenheit simply. Furthermore, it comes with an integrated thermal protection circuitry that prevents the heater from overheating and will turn off automatically if you forget to turn it off.

Features
  • Virtually indestructible
  • Accurate, one-touch system
  • Ultimate safety and reliability


7. MQ Submersible Aquarium Heater Auto Thermostat

MQ Submersible Aquarium Heater Auto Thermostat | Aquarium Heater

This best aquarium heater comes with a temperature adjuster that gives you the freedom and liberty of adjusting the temperatures between absolute values until you have reached your most preferred temperatures.

Your safety and that of your fish are also guaranteed since this heater will automatically shut off and turn itself on after water levels reach certain degrees. Also, the materials that make it are blast-proof and safe for use.

Features

  • Shatter-proof and blast-proof
  • Temperature adjustable
  • Safety protection
  • Made of shock-resistant quartz glass


6. Mylivell Aquarium Heater Submersible Auto Thermostat 

 Mylivell Aquarium Heater Submersible Auto Thermostat  | Aquarium Heater

This submersible aquarium heater features high-quality quartz glass and double seal materials that ensure its safety during operation. Also, it is fully submersible and will consume a power wattage of 100W. Its display is also easy to set and read.

Apart from this, it is suitable for use in both salty and freshwater. Using it will also guarantee you your safety and convenience during operation. What’s more, it will quickly set the figures for the temperatures that you want with convenience.

Features
  • Adjustable Temperature
  • Convenient and Safe
  • High Quality


5. MQ Submersible Aquarium Heater Auto Thermostat

 MQ Submersible Aquarium Heater Auto Thermostat | Aquarium Heater

MQ Submersible Aquarium Heater is ideal for use and is applicable for use in both freshwater, marine and tropical aquariums. Likewise, it has a compact and small size, and this makes it ideal for use in small aquariums.

Certainly, it comes with a led indicator that will light up and display whenever this heater is turned on and will automatically shut off when the water temperatures reach 78 degrees. Indeed, the materials that are used to make them are heat resistant.

Features
  • Built-in automatic thermostat
  • Small in size
  • Easy to install
  • fully submersible


4. Orlushy Submersible Aquarium 

Orlushy Submersible Aquarium  | Aquarium Heater

Orlushy Submersible Aquarium Heater will use 100W of power. It is suitable for 15 to 30 gallons of aquariums, its voltage 110-120V. it also comes with a power cord is 6ft

This heater is explosion-proof thanks to the 2mm thickened quartz glass. The benefit is that it can be used in freshwater and saltwater aquariums. Equally important, it is easy to hide in the tank. It comes with a reliable thermostat that will maintain uniform temperatures

Features
  • 110V-120V/60HZ 6-foot power cord,
  • Fully submersible.
  • Universal heater for marine, freshwater or tropical aquariums


3. DaToo Aquarium Heater Fish Tank Heater Submersible

DaToo Aquarium Heater Fish Tank Heater Submersible | Aquarium Heater

The DaToo best Aquarium Heater will provide a comfortable environment for your fish by creating warm water temperatures. More importantly, it comes with adjustable temperature settings that will only require you to adjust the knob, and the display is also evident.

With this in mind, you will not need to worry about your heater breaking. This is because the materials that are used to construct it are safe and durable and will not break up easily. Also, the materials making the heater are safe and safe from BPA.

Features
  • Fit 2 to 10 gallons tank
  • freshwater and saltwater use


2. FREESEA Aquarium Fish Tank Submersible 

FREESEA Aquarium Fish Tank Submersible  | Aquarium Heater

You will quickly adjust the temperatures between the range of 59°F~94°F. It comes with a crystal-clear display that will display temperatures in Fahrenheit °F. This heater has a design for1~10 gallons tank.

That is to say, it also comes with an automatic constant temperature function that will automatically shut down when water levels reach a certain temperature level. When the water levels drop to specific temperatures, it starts heating again.

Features
  • Constant temperatures
  • Touch buttons controls
  • Easy to use


1. FREESEA 25/50/100/200/300-Watt Aquarium Heater

 FREESEA 25/50/100/200/300-Watt Aquarium Heater | Aquarium Heater

This best Aquarium heater is suitable for 1 to 5 gallons of water, and you will either use fresh or salty water. It will use a power rating of 110- 120V. Adjusting the temperatures is effortless and straightforward since it comes with an easy to read display.

Its automatic constant temperature controls make it to automatically shut off and on when the water levels reach a certain level. It is fully submersible. The materials making it are safe and free form BPA.

Features
  • Automatic constant temperature function
  • Temperature range 63-95 Fahrenheit
  • Easy to use


Best aquarium heaters are essential in your aquariums since they will heat the water in your aquarium and hence providing a serene and comfortable environment for your fish to live in. These heaters will come in many designs, shapes, and colors. Some are fully submersible, while some are not. Another difference is that some will either be placed either vertically or horizontally. When adjusting the temperatures, always ensure you have set the correct temperatures according to the chart. Before buying one, always consider the materials making it, the wattage, cable length, ability to read the settings, safety features, and so on.