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HITOP 15W/25W/35W Mini Aquarium Heater Submersible Small Fish Tank Heater for up to 10Gallons Fish Tanks, Fish Bowls, Betta Heater with External Temperature Controller

  • Based on 98 reviews
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Availability: Only 6 left in stock, order soon!
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Arrives Wednesday, Aug 12
Order within 21 hours and 48 minutes
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Size: 25W


Features

  • [Finger-sized aquarium heater, Super Mini] HITOP15W/25W/35W aquarium heater is very small and short with its length of 3.7in so that the finger-sized heater is very easy to hide in the fish tank.15W mini heater suits for 1-4 gallon fish tank, 25W heater can be used in 2-6 gallon tank while 35W is recommended to use in 4-10 gallon nano fish tank, betta tank, fish bowl, desktop aquarium.
  • [External Temperature Regulator] No more wet hands when adjusting the temperature. When setting the temperature, turn the set temperature to the green light, and the red indicator above will light up when heating. Temperature range is 64-93F. 1.5M long power cable, easy to control the temperature outside the fish tank.
  • [Memory Function] This small heater has a power-off temperature memory function, that is, the temperature setting of the heater after a sudden power failure will be automatically consistent with that before power failure, and there is no need to reset. After power on, the temperature setting is automatically restored.
  • [Sturdy and Durable] This fish tank heater is made of high-quality thickened quartz glass, which is high temperature and corrosion resistance, so it can be used in both fresh water and saltwater tank, betta tank, turtle tank. Low power heater can effectively prevent overheating, and with great sealing performance, water wont enter this mini heater, providing a better living environment for the fish.
  • [Package including] Come with a mini heater connecting its power cable and a sticker thermometer, 2 powerful suction cups to firmly attach the heater to the inner wall of the tank, 1 bottom cover to protect the heater and prevent the heater directly touch the bottom of the tank. We provide 24/7 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. Visit the Store Visit the Store Visit the Store 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. Accessories: 1 Thermometer Sticker, 2 Suction Cups, 1 bottom protective cover

Product Dimensions ‏ : ‎ 0.47 x 0.47 x 3.7 inches; 4.8 ounces


Item model number ‏ : ‎ Q1


Date First Available ‏ : ‎ December 23, 2023


Manufacturer ‏ : ‎ Ibay


Best Sellers Rank: #74,962 in Pet Supplies (See Top 100 in Pet Supplies) #132 in Aquarium Heaters


#132 in Aquarium Heaters:


Customer Reviews: 4.2 4.2 out of 5 stars (98)


Item Weight: 4.8 ounces


Manufacturer: Ibay


Item model number: Q1


Date First Available: December 23, 2023


Item Package Dimensions L x W x H: 7.17 x 2.8 x 1.89 inches


Item Dimensions LxWxH: 0.47 x 0.47 x 3.7 inches


Brand Name: HITOP


Target Audience Keyword: Aquarium Heater


Directions: This fish tank heater must be fully submerged in water.


Warranty Description: 1 year warranty


Model Name: Q1-25W


Color: Black


Size: 25W


Number of Items: 1


Style: 25W(2-6Gal)


Included Components: aquarium heater and suction cups


Specific Uses for Product: Heat water to the set temperature in the fish tank.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 12

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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Top Amazon Reviews


  • Great for smaller aquariums
Size: 25W
Works great for my small aquarium. I like that you can set the temperature and not have to worry about it.
Reviewed in the United States on April 24, 2026 by Rhianna

  • Great value and worth the price
Size: 25W
I absolutely love this mini heater. It works well. Not one problem with it. Very much worth the money. I will be buying some more.
Reviewed in the United States on May 19, 2026 by Mary

  • All the features in a mini size = A+
Size: 25W
Compact and gives an accurate temperature. Luv this little heater. And the 2 small silicone suction cups and protective cap for the bottom are well designed. You can hide it discreetly in the aquarium, the controls are easy to reach and the price is just right. (Getting another at higher watts for our other, bigger tank.) ... show more
Reviewed in the United States on January 25, 2026 by Vector O.

  • Do not buy.
Size: 25W
Horrible product!! It will not keep a temperature. You set to 78 then it reaches 78 and turns off until god knows when it wants to power back up. By then my 5 gallon tank is freezing !!
Reviewed in the United States on July 12, 2026 by Oscar

  • It does its job!
Size: 25W
(After 5 days) It does the trick. It is working well in my 3.5 gallon half moon betta tank. The tank is plastic and the sticker thermometer did not work well on the tank. It seems well built. No mark for the temp setting, so I max it and went down till the light came on. Had to adjust it a couple times to get it just right. FYI- the suction cups are useless. I used the suction cups from the air hose to keep it in place. all together a solid B unit. I would get it again. ... show more
Reviewed in the United States on August 15, 2024 by Bewareofuser

  • Works wonderfully
Size: 25W
So happy it is small and has a dial to get the correct temperature of water to match the fish tanks. Bought three they seem to be well made and works great.
Reviewed in the United States on December 12, 2025 by Christine M M

  • Beta aquarium heater
Size: 25W
We have a 5 gallon tank that our Beta is in. So we purchased this heater for it. It is small and works perfectly for this purpose. It was easy to install, set up and was a great value for the price.
Reviewed in the United States on December 18, 2025 by Kara L. Powell

  • Great product
Size: 25W
Had it for almost two years and works perfectly. Only issue was the suction cups that came with the heater didn’t actually hold it up but easy fix with a plastic airline holder.
Reviewed in the United States on October 30, 2025 by Lego

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