Aqueon Pro Aquarium Heater, 100 watt

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$57.00 (-24%) Chewy Price
$74.95 List Price
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About This Item

Details

  • Perfect for easily maintaining the ideal water temperature for both healthy salt and freshwater community fish tanks.
  • Available in a wide range of the most common wattage sizes to provide a custom heating experience for any aquarium.
  • Precise temperature dial from 68 to 88 °F allows for complete control of aquatic climate within a 1-degree difference.
  • Durable shatter-resistant heater construction allows for completely submersible and safe aquarium temperature control.
  • LED indicator lights up red when heating or green when not heating, and auto shut-off feature prevents overheating.

Instructions

Size

Learn More About Aqueon From Our Team of Experts

Reliable Heaters for Every Aquarium

Create a comfortable and healthy home for your fish with Aqueon’s range of aquarium heaters. From Submersible Glass Heaters to Mini Aquarium Heaters and Aquatic Flat Heaters, Aqueon offers a variety of options to suit any tank size or setup.

All About the Fish

Aqueon strives to do what’s best for the health and well-being of fish and aquatic life. They focus on the little things that make your life easier when keeping an aquarium, so it’s easier to keep your fish happy and healthy.

Hassle-Free Heating

Aqueon Preset Aquarium Heaters are the ultimate solution for easy temperature control. Calibrated to a preset temperature of 78°F with automatic safety shutoff, the heater is fully submersible and constructed of shatter-resistant quartz glass.

Find the Right Heater for Your Tank

Aqueon offers a variety of heater options to accommodate all aquarium sizes. Choose from lower-wattage heaters for small tanks, 100-watt and 200-watt heaters for medium-sized tanks and 300-watt heaters for large aquariums.

About Aqueon

Developed by Aquatic hobbyists, Aqueon provides a broad array of aquarium solutions to help maintain healthy aquatic environments.

Shop Aqueon

Questions & Answers

17 Customer Questions

How many watts will i need for a 75 gallon tank?

Answer by Chewy • Mar 26, 2019
The wattage needed will depend on how many degrees you need to increase above room temperature (68-72 degrees fahrenheit). For increasing a 75 gallon aquarium 5-10 degrees fahrenheit, choose the 200 watt heater. If increasing the 75 gallon aquarium by 15 degrees fahrenheit, choose the 300 watt heater. Please see the image attached for the Heater Guidelines.

Is this heater good for red eared sliders? Also up to what degree does heater go up to cuz I'm looking for heater that can go up to 88-92 degrees. Also what does the 3rd bullet point mean when it says "complete control of aquatic climate within a 1-degree difference"?

Answer by Chewy • Jan 22, 2020
This Pro Heater wouldn't be suitable for a red eared slider turtle as they need a temperature gradient (95°F for the warm end/basking area and 75°F for the cool end/water). This heater has a precise temperature dial from 68-88°F and allows for complete control of aquatic climate within a 1-degree difference. This 1-degree difference is added for safety and precision.

will this work for a 50 gallon garden pond in a pennsylvania winter?

Answer by Chewy • Aug 14, 2019
This heater should not be installed or stored where it will be exposed to weather or to temperatures below freezing.

how long is the 300watt and can you put it horizontal

Answer by Chewy • Mar 28, 2019
This heater can be placed vertically or horizontally. The 300 watt heater is 3.5 x 1.5 x 15.25 inches.
Reviews
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3.8
Rated 3.8 out of 5 stars
116 Ratings
Terms & Conditions

89 Customer Reviews

Rated 5 out of 5 stars
By Lauren on Oct 11, 2025

Happy Betta!

Seems to be working perfectly for my bettas new 10gal tank! Nice design, adjustable heating temps with auto turn-off/turn-on. Betta Baby and Betta Mom Approved!

Seems to be working perfectly for my bettas new 10gal tank! Nice design, adjustable heating temps with auto turn-off/turn-on. Betta Baby and Betta Mom Approved!

Rated 1 out of 5 stars
By Linda on Oct 25, 2025

Does not work properly

Thermostat does not work properly. temperature cannot be controlled properly

Thermostat does not work properly. temperature cannot be controlled properly

Rated 5 out of 5 stars
By Lee on Nov 9, 2025

Good tank heater

So far, doing a fine job warming my turtle's 55-gallon tank.

So far, doing a fine job warming my turtle's 55-gallon tank.

Rated 5 out of 5 stars
By Anthony on Apr 19, 2025

Luck is a must with aquarium heaters

So like my title says it’s about luck with these things. Sometimes you’ll get faulty ones that don’t work at all or that will die quick in less than a year heck

So like my title says it’s about luck with these things. Sometimes you’ll get faulty ones that don’t work at all or that will die quick in less than a year heck sometimes after like 2 months. So far so good needed a new one for my turtle. Even though in the wild she would be use to like 30 to 40 degree water. Since she from like areas like Mississippi and few other states on the east coast. I still want her water to be warm least like 79 degrees to 81. Especially on cold mornings or days.

Rated 1 out of 5 stars
By Christina on Nov 26, 2023

Doesn't work or fails quickly

The old Aqueon Pro with the blue top instead of the new, clear one worked well for several years. One broke after 4 and the other is still going after 6 years. But

The old Aqueon Pro with the blue top instead of the new, clear one worked well for several years. One broke after 4 and the other is still going after 6 years. But the new Aqueon Pros have all been junk. I've tried 5 different ones, and all of them have either failed to heat to the set temperature (usually cold by a few degrees) or they failed quicker than any other brand including cheap, generic brands. I'm going to stick with my Eheims

Rated 5 out of 5 stars
By Barbara on Nov 24, 2023

Right on spot

This brought my temp up perfectly within a short amount of time. Very straight forward and seems to be very well made. This was bought to replace a heater that quit

This brought my temp up perfectly within a short amount of time. Very straight forward and seems to be very well made. This was bought to replace a heater that quit after a month. The temporary one just couldn't maintain the temp but this one went right to work. Very happy. I plan on getting another to have for emergencies.

Rated 5 out of 5 stars
By Lynn on Jan 26, 2024

Great aquarium heater!

I use these heaters in my fish tanks that have aggressive fish because they can bang into them and the heaters are safe and don’t break!

I use these heaters in my fish tanks that have aggressive fish because they can bang into them and the heaters are safe and don’t break!

Rated 5 out of 5 stars
By susan on Apr 26, 2024

Aqueon Heater

Great heater, have two in my 230 gallon tank

Great heater, have two in my 230 gallon tank

Rated 1 out of 5 stars
By David on Oct 29, 2023

Disappointed

Heater looks great, worked well for almost a month and then shorted out, shocked me when I touched the water and killed 2 fish that lived near it. To late to return

Heater looks great, worked well for almost a month and then shorted out, shocked me when I touched the water and killed 2 fish that lived near it. To late to return so I replaced it with an Ehiem, a trusted product. I wish I would have returned it but I threw away all the boxes.

Rated 1 out of 5 stars
By Vika7 on May 6, 2023

Defective heater

When I went to bed my Bettas tank was 80 degrees. When I woke up the next morning his tank was 75 degrees. The red indicator light was on but it wasn't heated up

When I went to bed my Bettas tank was 80 degrees. When I woke up the next morning his tank was 75 degrees. The red indicator light was on but it wasn't heated up. I have the older version of this heater and it hasn't failed me in 2 years. This new "Pro" didn't make it 24 hours. This is why you should always keep a thermostat in your fish tank because heaters fail all the time. My poor Betta had a 5 degree temperature drop in a short period of time so I hope he doesn't get sick. Chewy has great customer service and refunded my payment so I can put it towards another heater. Thank you Chewy for standing by your products!