Aquarium Heater, 25W/50W/75W/100W/200W/300W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater
Aquarium Heater, 25W/50W/75W/100W/200W/300W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater
Hero image 0 of Aquarium Heater, 25W/50W/75W/100W/200W/300W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater, 0 of 7

Aquarium Heater, 25W/50W/75W/100W/200W/300W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater

4.1 stars out of 16 reviews
(4.1)|
16 ratings

Key item features

  • 🐠Adjustable Temperature: The aquarium heater features an adjustable temperature range of 68°F to 90°F, perfect for fish tanks up to 8 gallons. With a compact 7.7" length, it’s easy to set the desired temperature, accommodating various species of fish for optimal comfort.
  • 🐠Automatic Constant Temperature: The fish tank heater automatically maintains the set water temperature. When the desired temperature is reached, the indicator light turns off, and the heater stops heating. If the water cools down, the heater will turn back on to restore warmth, ensuring a consistent environment for your fish.
  • 🐠No More Chilling Your Fish: Designed to regulate water temperature, this aquarium heater creates a warm, tropical environment for your fish. It’s ideal for both fresh and saltwater aquariums, providing your aquatic pets with a stable and comfortable habitat.
  • 🐠Premium Shatterproof Glass: Built with shatterproof glass and BPA-free plastic, the aquarium heater is fully submersible and completely safe for your fish, with no harmful substances released into the water. It's durable and reliable for long-term use.
  • 🐠Important Notes: To maintain an even water temperature, place the heater near a filter or pump for better water circulation. Always unplug the heater 30 minutes before performing water changes to ensure safety. This heater is an essential tool for aquarium enthusiasts looking to provide a stable and safe environment for their fish.
Current price is $11.99
Price when purchased online
  • Free 90-day returns

How do you want your item?

Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
How do you want your item?
Columbus, 43215
Arrives by Tomorrow
.
Order within 1 hr 26 min
Sold by One House
Fulfilled by Walmart
3.7 stars out of 5, based on 10 seller reviews(3.7)
Report an issue with this seller
Free 90-day returns
walmart plus

Get free delivery, shipping and more*

*Restrictions apply
Try Walmart+ now

About this item

Product details

Specifications

Warranty

Customer ratings & reviews

4.1 out of 5 stars
stars16 ratings8 reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 8 reviews

Jun 9, 2025
kimberly
Item details
Watts: 50 W
Sold byOneHomeDelivered byWalmart
5 out of 5 stars review

Verified Purchase

5 gallon tank my rooms cold to my liking so this was perfect

Incentivized Review
Helpful?50OCB39DXOG314417905389
Oct 16, 2025
Daisy
Item details
Watts: 25 W
Sold byOneHomeDelivered byWalmart
5 out of 5 stars review

Verified Purchase

good thermostat for my 10 gallon aquarium..

Incentivized Review
Helpful?50OCB39DXOG314417905389
Oct 30, 2025
Selena
Item details
Watts: 75 W
Sold byOneHomeDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Heater

I haven't use it yet but it shipped really fast and seem easy to set up

Incentivized Review
Helpful?50OCB39DXOG314417905389