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FREESEA

FREESEA Aquarium Fish Tank Heater: 50W Small Submersible Turtle Heater with Adjustable Temperature External Controller for Betta | Saltwater | Freshwater | 1-10 Gallon

    • Based on 8,707 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Apr 8
Order within 1 hour and 45 minutes
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Size: 50Watt


Features

  • FREESEA Aquarium Heater: 50w betta fish heater, voltage: 110~120V, is suitable for use in 1-10 gal betta fish turtle tanks and aquariums. The power cord is 5ft, long enough for indoor use
  • Double Safety Protection: When the top part of the turtle tank heater is out of water it will auto shut off. When the actual water temperature is higher than 94F, it will auto activate the overheating protection and stop heating
  • External Controller: The betta fish heater is adjusted by an external controller, which you can mount on the outside edge of the tank. Its convenient to adjust temperature that range from 63F to 94F
  • LED Temperature Display: Digital led temperature display shows the real-time temperature and error code on the screen. When the mini aquarium heater is heating, there indicator light above the digit is on red
  • 12-month Warranty: We are committed to providing high quality products and better service with a 12-month warranty. If you have any questions about the turtle heater you receive, please feel free to contact us

Material: Glass


Voltage: 110 Volts


Item Length: 3.5 Inches


Brand: FREESEA


Color: Submersible Heater with External Controller


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 2.5 x 1.5 x 3.5 inches; 8.15 ounces


Item model number ‏ : ‎ FS28-50W


Date First Available ‏ : ‎ September 17, 2017


Manufacturer ‏ : ‎ Guang Zhou City Freesea Industrial Co.,Ltd


Best Sellers Rank: #15,541 in Pet Supplies (See Top 100 in Pet Supplies) #24 in Aquarium Heaters


#24 in Aquarium Heaters:


Customer Reviews: 4.1 4.1 out of 5 stars 8,707 ratings


Material: Glass


Voltage: 110 Volts


Item Length: 3.5 Inches


Brand: FREESEA


Color: Submersible Heater with External Controller


Wattage: 50 watts


UPC: 722970219243


Manufacturer: Guang Zhou City Freesea Industrial Co.,Ltd


Item Weight: 8.1 ounces


Item model number: FS28-50W


Date First Available: September 17, 2017


Item Package Dimensions L x W x H: 5.55 x 3.7 x 2.8 inches


Item Dimensions LxWxH: 2.5 x 1.5 x 3.5 inches


Brand Name: FREESEA


Target Audience Keyword: fish, fish tortoise


Size: 50Watt


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Apr 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great
Size: 50Watt
I recently purchased the FREESEA Aquarium Fish Tank Heater, and it has been a fantastic addition to my aquarium setup! This 50W submersible heater is specifically designed for small tanks, and it’s perfect for maintaining the right temperature for my betta fish and other aquatic friends. One of the standout features of this heater is its adjustable temperature external controller. Setting the desired temperature is a breeze, and the clear display allows me to monitor it at a glance. I’ve noticed that my fish are much more active and healthy since I started using this heater, which I attribute to the consistent temperature it maintains. The design of the heater is compact and sleek, making it easy to fit into my 1-10 gallon tank without taking up too much space. It’s also submersible, which means I can place it exactly where it’s needed for optimal heating. The installation process was straightforward, and I appreciated the included suction cups that keep the heater securely in place. I was also impressed by how quickly the heater warms up the water. It doesn’t take long to reach the desired temperature, and I feel confident that my fish are comfortable and safe. The heater has built-in safety features, such as over-temperature protection, which provides additional peace of mind. What I love most is its versatility; this heater is suitable for both freshwater and saltwater tanks, making it a great option if I decide to diversify my aquarium in the future. The quality of the materials used feels solid, and I expect it to last a long time. Overall, the FREESEA Aquarium Fish Tank Heater is an excellent choice for anyone with a small aquarium. It offers reliable heating, easy temperature control, and peace of mind for fish owners. I highly recommend this heater for keeping your aquatic pets happy and healthy! ... show more
Reviewed in the United States on November 5, 2024 by C
    • Nice Little Heater
Size: 50Watt
Nice little heater. I like the digital readout and ease to use. It can hear a 38 gallon tank to 79F if the ambient temp in the room is 70. It struggled when the ambient room temp was 65 so I used two of them then.
Reviewed in the United States on February 24, 2025 by clubnp
    • Finally found a heater that works!
Size: 50Watt
This is the third type of heater I have tried for my 5 gallon betta tank. This one works! It's keeping my temperature at a steady 78.5*. Now, there is a caveat: the temperature is set for 82*, so it doesn't match my separate glass thermometer reading, but I don't mind adjusitng it a few degrees higher. Also, there is a large red temperature gauge on the heater itself which is visible at night. But the heater is fairly small and easy to use. I would buy this brand again. ... show more
Reviewed in the United States on December 21, 2023 by smilingswan
    • good help
Size: 75Watt_
we used this heather before , ; and it works pretty well; we have it in outside water tank for turtles mostly in winter time. and sometimes we found them on top of it . this means that it keeps them warm enough . When is too cold we put them inside the house and in the summer no need . we just have to chenge them after rwo or three years depending of the used. we keep it on, all day during the cold. the tank is 25 gallons. ... show more
Reviewed in the United States on December 29, 2024 by ElizaMe
    • Don’t buy killed all my fish. Flaming red water over 107 degrees. I am lucky I caught it.
Size: 75Watt_
Review Image by BN BN
Review Image by BN BN
Do not buy warning. This heater 5 months old malfunctioned and kill my fish. It was so hot it was off the chart on my digital thermostat. It was flaming hot. I am lucky it didn’t burn the house down. I guess there was no over heat switch on this thing. Some of my fish were pregnant. Picture of two of them. Please be careful. I notified Amazon about this. This should have never happened. Lost a lot of money, time and my fish friends. ... show more
Reviewed in the United States on March 24, 2025 by BN BN
    • Great heater for small aquariums
Size: 50Watt
I was a little nervous about this given some of the reviews, but pretty much every aquatic heater on Amazon has a decent amount of 1 star reviews. I'm using this in a 3 gallon tank I use for raising guppy fry until they are large enough to move to the larger aquariums I have for them. This has been amazing! I haven't modified it at all and used it for about a month now and I'm happy to report that every guppy survived. This heater does sometimes vary by 1 degree when the temperature drops below what it is set at but it quickly heats up again to the set temperature and it is never more than 1 degree lower which was not an issue for the babies. Honestly I prefer this to it always keeping the temp higher than what I set it at like some other models do since it pretty much guarantees that it will not cook your fish. None of my fish attempted to go behind the heater, so if I had a Betta I might place some netting around the suction cups on the back as one other reviewer did since Bettas do enjoy resting and hiding. Alternatively, I'd suggest giving your Betta more preferable resting places and hiding spots/keep the tank warm enough so he won't want to go behind the heater. ... show more
Reviewed in the United States on March 29, 2022 by Kindle Customer

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