Aquarium Heater,25W Small Submersible Fish Tank Heater Super Short Aquarium Heater for up to 1 Gallon Tanks Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
Aquarium Heater,25W Small Submersible Fish Tank Heater Super Short Aquarium Heater for up to 1 Gallon Tanks Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
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Aquarium Heater,25W Small Submersible Fish Tank Heater Super Short Aquarium Heater for up to 1 Gallon Tanks Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature

Aquarium Heater,25W Small Submersible Fish Tank Heater Super Short Aquarium Heater for up to 1 Gallon Tanks Small Betta Aquarium Heater with Digital Display Controller Adjustable TemperatureAquarium Heater 25W Small Submersible Fish Tank Heater Super Short Aquarium Heater 1 Gallon Tanks Small Betta Aquarium Heater Digital Display ControlAquarium Heater 10W Small Submersible Fish Tank Heater Super Short Aquarium Heater 1 Gallon Tanks Small Betta Aquarium Heater Digital Display Control
Watts:25 W-Out of stock

Key item features

  • ‌【Super Mini Size】: This small aquarium heater is “thumb size” - only 1.97” (5cm) in length. Great for nano tanks / betta tanks. The innovative super mini size perfectly solves the headache of the fish keepers on the traditional heaters! Takes up less space, easy to hide, but in full power! Temperature range is 64-93F, for up to 1 Gallon tanks.
  • 【Overheating Protection】: Full consideration of safety. This fish tank heater will stop working when the water temperature exceeds 97F. You are free from “cooking fish”! MEMORY FUNCTION – The last setting is stored in the thermostat. In case of a power cut, when the power recovers the heater will follow the last setting.
  • 【Intelligent temperature control】: The small aquarium heater is made of explosion-proof quartz glass material and a high-temperature resistant nickel-chromium heating wire with silicon carbide heat conduction, faster water heating and longer lasting. And the stronger black shell is a high temperature resistant ABS material which protect the fish, your aquatic organisms and you from scalding.
  • 【Easy to Operate 】This aquarium heater is automatic constant temperature heating when the power is switched on. The preset temperature is 78℉. Accuracy is ±3℉. Stair shape heating that red light is on and heater starts to intermittently heat the water to the preset temp, saving energy and electricity. When green light is on, heater stops working and maintains constantly 78℉.
  • 【Durable & Material】 The durable material of the heater ensures safe operation. The outer shell covering the whole body of the heater is made of heat-resistant ABS material that it won’t deform and melt under high temperature. The heating rod is made of nickel-chromium heating wire to faster heating rate, and non-corrosive quartz glass.
  • MULTIPLE USES – This heater can be used for both fresh and marine water. It can be not only used as an aquarium heater, but can also work for turtles, pet fountains, and plant seedling.
Current price is $16.99
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3.7 out of 5 stars
stars16 ratings6 reviews
How item rating is calculated
  1. 5 stars56% (9)
  2. 4 stars0% (0)
  3. 3 stars19% (3)
  4. 2 stars6% (1)
  5. 1 star19% (3)
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Showing 1-3 of 6 reviews

Feb 11, 2026
Jenny
Item details
Watts: 15 W
Sold byYFMarketDelivered byWalmart
5 out of 5 stars review

Verified Purchase

This heater keeps my betta happy in his one gallon bowl. betta fish are ore active and eat well when they have warmer temperatures. Even Florida can be too cold. This was a good buy

Helpful?1XLTCOFEZRGG18205209312
Feb 18, 2026
Donny
Item details
Watts: 15 W
Sold byYFMarketDelivered byWalmart
5 out of 5 stars review

Verified Purchase

works perfectly. just want i needed

Helpful?1XLTCOFEZRGG18205209312
Oct 22, 2025
Ginal
Sold byYFMarketDelivered byWalmart
3 out of 5 stars review

Verified Purchase

Not as picture says,had to return it

Helpful?1XLTCOFEZRGG18205209312