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Best Aquarium Heater

The Best Aquarium Heater 2020

An aquarium heater is a vital tool for a tropical fish aquarium. This is because they’re able to raise the temperature and maintain your water tank temperature safely.

The best aquarium heater is the Cobalt Aquatics Heater. This is because of its range of power options, its sleek and shatterproof design to suit any aquatic environment.

Down below is an article on the best heaters for any type of tank. These are suitable to small and large sized aquariums with different environments. You should consider the power output before buying, to match it to your tank size.

Aquarium Heater Comparison

Aquarium HeaterTank Size (Gallons)Temperature Range
Cobalt Aquatics5 – 100 66 °F – 96 °F
Hygger Submersible7 – 6075°F – 91 °F
Aqueon Pro5 – 75 68 °F – 88 °F
Aquatop Quartz5 – 2068 °F – 93 °F
Marineland Heater5 – 100 66 °F – 96 °F
FREESEA1 – 6063°F – 95 °F
Hygger Titanium5 – 12075°F – 91 °F
Eheim Jager 3 – 50 63°F – 95 °F
Fluval 5 – 10068 °F – 93 °F
Hydor In-Line 30 – 15068°F – 91 °F

When searching online for a heater, you’ll have to consider what size is suitable for your tank. This is because you do not want an overly or under powered heater for your aquarium.

Additionally, you should check out its design to see if it can be hidden in your environment.

Below is an article on the best aquarium heaters online today.

The Best Aquarium Heaters


1. Cobalt Aquatics Heater

The best all-round aquarium heater for any sized tank is the Cobalt Aquatics Flat Neo-Therm Heater. This is due to its effectiveness of maintaining a water temperature range within 18 to 35 degrees, whilst having its super-flat top quality material design.

Furthermore the Cobalt Heater has seven different power outages ranging from 25W to 300W, so it can be suitable for any sized fish aquarium. Also it be important to mention its innovative feature of adjusting itself to the temperature after its be initially set in a safe progression.

In terms of features of the Cobalt Aquarium Heater, they include:

  • Temperature Range: 66 °F – 96 °F
  • Wattage: 50 – 300 Watts
  • Size Tank: 5 – 100 Gallons
  • Deviates temperature by a difference of ±0.2OF- 0.5OF.
  • Cobalt Heater is fully submersible & shatterproof.

The Colbalt also has advanced safety features which include its integrated thermal protection circuit in the heater which prevents overheating. Final point to make about the Cobalt Aquatics Heater, is that it by far has the most sleek and simple design, that won’t be an eye-sore in your aquarium.

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2. Hygger Submersible Aquarium Heater


The best small and lightweight aquarium heater option for a tank is the Hygger Submersible Tank Heater. This is down small, yet both shatter-resistant and explosion-proof construction that is also small enough to be hidden and unnoticed in your tank.

Other features of the Hygger Submersible Aquarium Heater, include:

  • Temperature Range: 75°F – 91 °F
  • Wattage: 100 – 300 Watts
  • Size Tank: 7 – 60 Gallons
  • Deviates temperature by a difference of ±1.5OF- 2.0OF.
  • To be use in both freshwater and saltwater aquariums

Ultimately if you’re searching for a small heater that’ll be sleek enough to be hidden in the background, yet to have an effective performance output, then the Hygger Submersible is a perfect product for you. Attributes such as its automatic shut off to prevent heating, 3 year warranty and its external temperature control of this heater make it one of the best heaters for aquariums on the market!

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3. Aqueon Adjustable Pro Aquarium Heater

The easiest to use aquarium heater is the Aqueon Adjustable Pro heater, this can be due to its adjustable temperature control and LED indicator to give you full visibility of the temperature and when it’s heating your tank.

In terms of features of the Aqueon Adjustable Pro Aquarium Heater, they include:

  • Temperature Range: 68 °F – 88 °F
  • Wattage: 50 – 300 Watts
  • Size Tank: 5 – 75 Gallons
  • Deviates temperature by a difference of ±0.1OF- 0.1OF.
  • Cobalt Heater is fully submersible & shatterproof.

Overall the Aqueon Pro is a great easy to use heater, especially if you’re looking for something hassle-free that your children could use. Other premium attributes it has is its durable construction as it has an anti-corrosive outer shell, which  ensures its longevity.

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4. Aquatop Quartz Glass Submersible Heater

If you’re searching for the best budget aquarium heater, than a great choice for you is the affordable Aquatop Quartz Glass Submersible Heater. This can be down to its ability to rival features of its big name rivals, without sharing the huge price tag.

In terms of features of the Aquatop Quartz Glass Submersible Heater, they include:

  • Temperature Range: 68 °F – 93 °F
  • Wattage: 50 Watts
  • Size Tank: 5 – 20 Gallons
  • Deviates temperature by a difference of ±0.1OF- 0.1OF.
  • Bright display, clearly showing the temperature.

Ultimately if you’re searching for a well-equipped and effective heater, then the Aquatop Quartz Heater is perfect for your tank. The Quartz heater will provide you with efficient performance in freshwater and saltwater aquariums alike. Moreover it comes with a adjustable temperature knob so that you can easily set the temperatures without issue.

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5. Marineland Precision Heater for Saltwater or Freshwater Aquariums

The best aquarium heater in terms of value for money is the Marineland Precision Heater. This is because it is a fully-submersible heater that is suitable for both a freshwater or saltwater aquarium, all at an affordable price for any aquarium.

Notable attributes that set it above the rest of the market is its advanced heating element and its thermal switch that helps guarantee safety and auto-switch off if the temperature spikes to let it cool down.

Features of the Marineland Aquarium Heater, include:

  • Temperature Range: 66 °F – 96 °F
  • Wattage: 50 – 300 Watts
  • Size Tank: 5 – 100 Gallons
  • Deviates temperature by a difference of ±1.0OF- 2.0OF.
  • Dial where the temperature can be raised or lowered by 1OF.

Ultimately if you’re searching for value for money when it comes to heaters, then the Marineland Aquarium Heater is the perfect product for you. Attributes such as its easy-to-view sliding scale and its user-friendly mounting bracket make it an easy choice for your aquarium.

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6. FREESEA Aquarium Heater


If you’re searching the best quality heater on the market, then the FreeSea Aquarium Heater exceeds expectations when it comes to market standards. This can be down to its efficient design that provides you with effective and reliable performance.

Moreover it has a multi-function LED digital display feature, which allows you to easily adjust water tank temperature with ease.

Other features of the FreeSea Aquarium Heater include:

  • Temperature Range: 63°F – 95 °F
  • Wattage: 25 – 300 Watts
  • Size Tank: 1 – 60 Gallons
  • Deviates temperature by a difference of ±0.1OF- 0.15OF.
  • Multi-function LED digital display feature.

Overall the FreeSea Aquarium Heater is an awesome heater to use for your aquarium. Feature such as it having the ability to restart when the temperature becomes lower, thus ensuring that the temperature is maintained at a constant rate set it above its competitors.

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7. Hygger Saltwater Tank Titanium Tube Aquarium Heater


The best saltwater heater is the Hygger Titanium Tube Aquarium Heater. This can be due to its top build-quality, as it is constructed from Titanium which provides you with exceptional durability and anti-corrosion against saltwater aquarium water.

Other features of the Hygger Saltwater Titanium Tube Aquarium Heater, include:

  • Temperature Range: 75°F – 91 °F
  • Wattage: 50 – 500 Watts
  • Size Tank: 5 – 120 Gallons
  • Deviates temperature by a difference of ±0.0OF- 4.0OF.
  • Automatic control system allows the heater to shut off if the temperature rises too high.

Ultimately the Hygger Titanium Tube is the best saltwater heater by a long shot on the market today. Attributes such as its advanced external IC temperature controller for easy temperature control set it far above its rivals in terms of features.

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8. Eheim Jager Aquarium Thermostat Heater


The most reliable heater on the market is the Eheim Jager Aquarium Heater.  This is because Eheim have been producing top quality heaters for over several years now with issues that are large reported among the aquarium hobbyists community.

Furthermore they have a large technological input into them as they have a new patented ‘TruTemp Dial’ that enables you to recalibrate the heater to match the perfect temperature setting with accurate precision.

Other features of the Eheim Jager Aquarium Heater include:

  • Temperature Range: 63°F – 95 °F
  • Wattage: 25 – 300 Watts
  • Size Tank: 3 – 50 Gallons
  • Deviates temperature by a difference of ±0.05OF- 0.05OF.
  • Patented ‘TruTemp Dial’ that accurately sets temperature.

Overall if you’re searching for a reliable heater that you know will go on for years, without issue then the Eheim Jager is the heater for your aquarium. Moreover factors such as its suction cups and mounting bracket for safely securing the heater into position make it a must buy!

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9. Fluval Electronic Heater


The best big name brand heater for your aquarium that you can rely on is the Fluval Electronic Heater. This is due to Fluval being an aquatics parts and accessories leader in the industry for the past 20 years, so you know you’re able to trust and rely on their products for effective performance when it comes to heating your fish tank.

In terms of features of the Fluval Electronic Heater, they include:

  • Temperature Range: 68 °F – 93 °F
  • Wattage: 50-300 Watts
  • Size Tank: 5 – 100 Gallons
  • Deviates temperature by a difference of ±0.1OF- 0.2OF.
  • Advanced digital microprocessor which gives you real-time temperature readings.

Overall, the Fluval Electronic Heater is a great choice when it comes to heating your aquarium. This is down to practical features such as its VueTech technology that helps you inform yourself through light and sound if there is a fall or rise in temperature.

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10. Hydor In-Line External Heater


The best external aquarium heater is the Hydor In-Line Heater. This is due it having no competition that meets its standards of features. This is because the Hydor has functionality which is enhanced by the Positive Temperature Coefficient (PTC) heating technology that prevents overheating.

Other features of the Hydor Aquarium Heater, include:

  • Temperature Range: 68°F – 91 °F
  • Wattage: 200 – 300 Watts
  • Size Tank: 30 – 150 Gallons
  • Deviates temperature by a difference of ±0.5OF- 0.5OF.
  • Positive Temperature Coefficient (PTC) technology, primarily aids in preventing overheating.

Ultimately if you’re searching for a reliable and high-performing external heater, then the Hydor Heater is the best product for your tank! It robust construction and dependable heating accuracy makes it perfect for a large aquarium!

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Conclusion

Heaters for your aquarium can be difficult to find, as different heaters have variable attributes and properties. Factors you need to cover over with a selected aquarium heater before buying it are its temperature range, power output and what size tank its suitable for.

All of recommendations that have been presented in this article are suitable for a range of prices and power output types.

About The Author

the aqua guru author

Jon is an aquarium keeper of over 15 years and the owner of Guppy's, Betta's and other marine life. He always likes to make changes to his aquarium for the benefit of his marine life's well-being and health using the best aquatic products on the market. You can read more about us here.