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HITOP 25W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cups for 5-10Gal

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Availability: Only 6 left in stock, order soon!
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Arrives Tuesday, Oct 20
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Size: 7in-25w


Features

  • This HITOP 25W aquarium heater is designed for 510 gallon freshwater and saltwater aquariums, with a compact 7-inch body and a 5ft power cord. Please choose the right wattage aquarium heater according to our size chart.
  • Thickened glass for safety: 2mm thickened quartz glass-- 33% thicker than 1.5mm normal fish tank heaters, more resistant to cracking and corrosion, helping protect you and your fish.
  • Easy temperature control: This submersible aquarium heater has an adjustable range from 68 to 93 F. Once set, it automatically turns on or off as water temperature changes-- no extra adjustment needed.
  • Accurate Temperature Control: Built-in thermostat fish tank heater, will automatically keep the water at the set temperature within2F error. Comes with a sticker thermometer to detect water temp at any time.
  • Easy to install& Inconspicuous: Install this adjustable aquarium heater at any angle by 2 powerful suction cups. we provide 1 more extra suction cup for spare (total 3 pcs). And the understated color will not disrupt the aquarium's aesthetics.
  • Cautions: Always keep the heater fully submerged while powered on-- before any water change, unplug it first. We provide 12 months after-sales service.

Description

About HITOP-Aquarium Mysterious and agile aquatic creatures attract human beings with their unique charm. The founder of HITOP-Aquarium was also deeply attracted. In order to make it easier for aquarium enthusiasts to maintain the fish tank, he has developed a variety of aquarium products after years of testing based on user experience. The founder of HITOP-aquarium has been deeply cultivating in the aquarium field for more than ten years, and finally founded this brand, which is committed to providing excellent products for aquarium enthusiasts. Each of our products is independently designed and developed independently, which is unique in the market. Lengthy testing and multiple inspections are a must for every product, and we do our best to provide high-quality products. Cable length: 5ft/ Comes with 3 suction cups& 1sticker thermometer(Stick it on the outside of the fish tank) This aquarium heater, adjustable temperature 68 ~ 93 °F, will shut off automatically when the temperature is reached, Will also automatically turn on when the temperature is lower than the set temperature, no extra adjustment is required. Note:Although we have carefully packaged it, it is made of glass, please check it carefully to see if there is any crack before using. (lf there is any problem with the heater, we provide complete after-sales service within 12 months.)

Product Dimensions: ‎0.9 x 0.9 x 7 inches


Item Weight: ‎8.1 ounces


Manufacturer: ‎Haisen


Item model number: ‎HP-608


Date First Available: ‎June 12, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Easy to use and great customer service
Size: 7in-25w
Works great and easy to setup. Helpful that it has adjustable temperature setting.
Reviewed in the United States on May 13, 2026 by AmazonGuy1

  • Good quality heater.
Size: 7in-25w
The heater was perfect for my 10 gallon tank but was too much heat for my 2 gallon tank. No issues whatsoever.
Reviewed in the United States on November 24, 2025 by Diane Cathey

  • Great!!
Size: 7in-25w
This has worked so good for my betta fish! I had first got a kit that had a heater with it and after 3 weeks the water was still so cold, my betta had lost his appetite due to the temperature! I decided to buy this and it has been a complete life changer for me! My betta has a huge appetite now and swims freely and with spirit! I’m not worried about him anymore and it works very well! ... show more
Reviewed in the United States on July 10, 2025 by Maddie

  • Easy to use
Size: 7in-25w
I bought 2 and use them in a 10 gallon tank and a 2 and a 1/2 gallon tank, they work well.
Reviewed in the United States on May 12, 2026 by Serene Grace

  • Good heater
Size: 7in-25w
For smaller tanks this has been an amazingly reliable heater, doesn't look bad has been durable, very easy to use as a plug and play and does not take up a ton of room in my 10 gallon tank
Reviewed in the United States on February 5, 2026 by Spencer

  • I thought it would be better
Size: 7in-25w
I’ve been trying to find a good heater for so long now and I thought this one was promising so I got one for all three of my tanks. Haven’t even had them a few years and water has seeped into at least two of them and they don’t really work anymore. And on one of them the temperature was never very accurate so I would set it to what should have been 90+ to even get it to barely 78 degrees. I had high hopes for this but ngl it’s not that great. One thing though is I’m grateful it hasn’t fried my fish. ... show more
Reviewed in the United States on August 8, 2026 by Olivia Y.

  • Kept even heat during my test
Size: 7in-25w
Tested heater in bucket for several days. Have to adjust temp control until you get the right temp. It takes a little time. After I got the right temp it held it there. The temperature of the room varied because weather was changing, but the heater held temp. This heater is a good size for my 3 1/2 gal quarantine tank. I am happy with it ... show more
Reviewed in the United States on September 4, 2021 by Nancy

  • This heater’s your lifesaver
Size: 7in-25w
Got a small tank (20 gallons tops) and the water’s getting chilly? This heater’s your lifesaver: just drop it in, twist the little dial to your preferred temp, and it’ll switch on and off by itself to keep the water nice and toasty. No noise, no hassle, and the tiny light lets you know when it’s doing its thing. ... show more
Reviewed in the United States on May 10, 2025 by Darien M.

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