Updated: April 7, 2021 - By: - Categories: Equipment

If you have an extra-large aquarium, it is hard to find a reliable and durable aquarium heater that could maintain a constant temperature inside the tank. That’s why we took it upon ourselves to use our experience and review some of the best 500-800 watt aquarium heaters that you can use for a 100/120/150-gallon fish tank. If you have larger tanks, just use more than one heater.

Best 500-watt heaters for 100+ gallon aquariums

Model Our rating Wattage For tanks Temperature range Features
Hygger Saltwater Tank Titanium Tube Heater with Controller editor's ratingHygger Saltwater Tank Titanium Tube Heater with Controller 500W 60 – 120 gallons 32-104°F, ±0.5°C error, adjustable LED digital display controller, thermometer, Celsius or Fahrenheit reading
Hygger Titanium Aquarium Heater with controller editor's ratingHygger Titanium Aquarium Heater with controller 500W (800W available) 60 – 120 gallons 70-94°F, ±1°F error, adjustable LED digital display controller, real-time temperature reading, anti-dry protection
Orlushy Submersible Aquarium Heater editor's ratingOrlushy Submersible Aquarium Heater 500W 40 – 75Gal 68-89°F, ±1°F, adjustable LED light indicator, include a digital thermometer
SeaELF Titanium Heater 500W editor's ratingSeaELF Titanium Heater 500W 500W 70 – 80 gallons 68-93°F, ±2°F (20-34°C, ±1°C) built-in thermometer, inline controller, running dry protection
AquaTop Titanium Heater w/Controller editor's ratingAquaTop Titanium Heater w/Controller 500 Watt up to 150 gallons 68-92°F, adjustable external controller, thermometer probe
Finnex Deluxe Titanium Tube Heater editor's ratingFinnex Deluxe Titanium Tube Heater 800 Watts 140 – 265 gallons 0-99°F, ±2°F, adjustable external controller

500-watt heater reviews

Hygger Saltwater Tank Titanium Tube Heater with Controller

The Hygger Saltwater Tank Titanium Tube Heater emerges as one of the best aquarium heaters in its class. It’s easy to see why this heater ranks highly among aquarists and experts alike from its collection of features.

This powerful heater has an output of 500 watts, perfect for 60 to 120-gallon aquariums. It comes with an external controller that is easy to use. The controller comes with three buttons to set the desired temperature.

The up button allows you to increase the temperature while the down button decreases. Once you select your preferred temperature, press ‘Set.’ The display will blink three times, then return to the current water temperature indicating the heater is set.

The controller has a dual LCD that displays the current and set temperatures of the water in Fahrenheit and Celsius.

The heater has a probe thermometer that monitors the water temperature and controls the thermostat accordingly. With this heater, you can enjoy the comfort of a heater with a strong and shatterproof build and works for saltwater and freshwater aquariums.

Hygger Titanium Aquarium Heater with Controller 500/800W

For techy aquarists that love feature-filled aquarium accessories, the Hygger Titanium heater is an excellent option awash with helpful features.

Being a 500-watt heater means it will work for aquariums of 60 to 120 gallons. It has a solid titanium construction with a double-sealed black protective guard that gives the heater a unique look and prevents the fish and yourself from scalding.

It has a built-in thermometer and an external controller. The controller is fitted with an easy to read LCD with real-time temperature monitoring. The heater is temperature adjustable and has a range of 70°F to 94°F.

You can set your desired temperature after installing the heater and filling the aquarium with water. After plugging the heater into a power outlet, the LCD will display the current water temperature. You can then long-press the key button until the screen blinks twice, then press the + or – button to set your desired temperature, and the heater is ready to go.

Another vital feature of this Hygger model is its thermo control, which prevents the heater from dry running. It also has a memory function that saves you from setting the temperature every time you turn the heater off.

Orlushy Submersible Aquarium Heater 500-watt

When you can’t compromise on quality and durability, titanium heaters are the best. But that means a higher price tag. When you have a tight budget and want a decent heater capable of maintaining a constant temperature for your fish, then a glass heater like the Orlushy Submersible Aquarium Heater is an excellent choice.

They have a sturdy build and often feature shatterproof glass, which means your fish are safe. This particular one is also a 500W heater best used in 40 to 75-gallon tanks. It is an adjustable heater with a temperature range of between 68°F to 89°F.

You can adjust the temperature using the dial at the top of the heater. Unfortunately, that means getting your hands wet, but that shouldn’t be hard. All you need to do is turn the dial to the corresponding heat reading indicated at the top of the heater.

The heater has a digital thermometer that monitors the water temperatures and switches the thermostat on and off. Considering the heater has an error of +/- 1°F, it’s safe to say the thermometer and thermostat in this model are quite efficient.

SeaELF Titanium Heater 500W

The SeaELF Titanium Heater is a blend of simplicity and convenience. It’s not overly flashy but has all the features you need from the right heater without exaggerating the price. It is rated 500 watts like the other heaters we have reviewed.

What stands out with this model is the heating rod, which is made from a titanium alloy and has an upgraded heating wire. It’s an adjustable heater with a temperature of between 68 °F to 93°F. You don’t have to worry about getting your hands wet when setting the temperature because it has an easy-to-use external controller.

To set the temperature, set up your aquarium and submerge the heater. Let it sit for about 20 minutes to acclimatize, then plug it into the power source. Press the ‘Set’ button on the external controller and adjust the temperature to your desire. The heater has an LCD where you can check the temperature you have selected, then confirm, and the heater will do the rest.

Despite being a budget-friendly heater, it’s quite efficient and accurate with an error of +/- 1°F, which is quite impressive, especially considering that it also comes with a feature protecting itself from running-dry and damages.

AquaTop Titanium Heater With Controller

The AquaTop Titanium Heater has to be one of the hardest workers on this list. Like the other options we have reviewed, it is rated 500 watts but can work for tanks of up to 150 gallons. It makes for a great heater when you want an option that gives you the most value for your money.

Other than the impressive performance, the heater is adjustable and comes with an external controller fitted with an LCD to make setting and monitoring the temperature simple. Once the heater is installed, you can easily set the temperature via the external controller without getting your hands wet.

The heater comes with a thermometer probe that will keep a close eye on the temperature variation in your tank and keep it within +/-1°F of the set temperature. The slim design keeps a low profile in your tank, which is a great plus if you value an unobstructed view.

Finnex Deluxe Titanium Tube Heater 800-watt

The Finnex Deluxe Titanium Tube Heater is another impressive performer on this list. Although it is rated 800 watts, it works for tanks of up to 265 gallons, which is quite remarkable. It is also one of the heaters on the market that delicately balances performance, features, and price.

It is a highly adjustable heater with a temperature range of 0°F – 99°F with a versatile external controller that you can use to set your preferred temperature. At first glance, the controller looks complicated, it’s actually easy to use.

After dipping the heater in the water and capturing the current water temperature, press the ‘Set’ button, then use the up and down dials to set your desired temperature. Once complete, press ‘Set’ again, and the heater is good to go.

With the Finnex Deluxe Titanium Tube Heater, you don’t have to worry about repeating the setting process. It has a memory function that restores the setting in case of a power outage.

Bottom line

We hope from the above list you can find a 500-watt heater that will work for your tank and meet your expectations. Each of the options is well designed and comes with the necessary safety features like overheat protection and auto-shutoff.

Lucas has been keeping successful fish, planted, and reef tanks for many years. He loves to collect aquatic organisms and keep as many aquariums as he can.

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