Shopping Cart

Your cart is empty.

Your cart is empty.

Mini Submersible Aquarium Heater, 25/50/100/150/200/300 Watts Adjustable Fish Tank Heater, Built-in Thermometer, External Temperature Controller, Smart Memory (10 Watts(USB))

Free shipping on orders over $29.99

$9.99

$ 4 .99 $4.99

In Stock

1.Size:300 Watts


  • Automatic Constant Temperature: aquarium heater is specially designed for mini fish tank for gallon, the heating will be automatically stopped when the set temperature is reached
  • External Temperature Controller: Set the temperature via an external controller instead of submerging the hands in water and turning the dial
  • Easy to Install: Thanks to the ultra-compact heater with powerful suction cup, it can be easily installed anywhere in the tank
  • Easy to Read: The water temperature will be displayed on the external controller in real time, no need another aquarium thermometer
  • Overheating Protection: Prevent cooking fish as overheating protection, stop heating automatically when overheating or lack of water



Product Description

mini size aquarium heater fish tank heater for below 1 gallon tank

Ultra-compact size, Easy to install, Easy to hide, Used for fish tank below 1 gallon

Parameter:

  • Power: 10 Watts
  • Fish tank volume: below 1 gallon
  • Input: 5V DC
  • Temperature range: 64~93 ℉
  • Temperature accuracy: 1 ℉
  • Power cord length: 4.3 feets

Packaging:

  • 1 x Heater with External Controller, 1 x Suction Cup, 1 x User Manual
5V usb powered, safety voltage, Safe from electric shock

Safety. 5V usb powered, prevent electric shock

  1. Adapter is not included
  2. Adapter requirement: 5V, above 2A, above 10W
  3. If the adapter doesn't have enough power, the controller will starts up repeatedly and the numbers in controller will be flashed.
  4. It is the best choice if you have children in your home.

Overheating protection to prevent cooking fish

  1. Overheating protection. Built-in temperature sensor. The heater will stop heating automatically if the water temperature exceeds 95℉. Display 'H1'. The heater will re-work when the temperature below 93℉
  2. color indicator, 3 Error codes.

  • RED: Heating / GREEN: No heating / YELLOW: Fault.
  • E1: Out of water / H1: Overheating / H2: Dry running.

switch from C and F by pressing and hold set button before power on

Switch temperature unit between C and F

  • Power off the heater
  • Press and hold 'SET' button, power on the heater, and then release the button, the temperature unit will be changed between C and F.

external temperature controller, easy to set, easy to read, easy to adjust

External temperature controller

  • Easy to set the temperature
  • Easy to adjust the temperature
  • Easy to read the temperature
  • No need extra thermometer
  • Please note that it is not waterproof

memory the setting, no need to set the temperature after power lost and recover

Memory the temperature setting

  • The temperature setting will be stored automatically.
  • If the power is turned off and then restored, the heater will automatically load the last temperature setting.
  • The intelligent memory function will protect your fish under any circumstances.
easy to use, built-in thermometer evenly heating and smart indicator lights

CAUTIONS:

  1. The device must be used under rated voltage 5V.
  2. When there is moss or other dirty on the heater surface and the LED screen, it needs to be cleaned up with soft brush in time.
  3. Disconnect power socket and wait for 15 minutes before changing water or remove heater.
  4. Place the heater in the way of water flow and don't bury it.
  5. If the numbers in the controller are flashing, please replace a high-power adapter to ensure that the current is above 2A and the power is above 10W

David Martin
2025-08-22 13:55:51
I Like how this is small for my 5gallon fish tank , l also like how I can program what temperature I want the water heat up then it automatically shuts of.I can also see the temperature on the power cord that's a plus . Delivery was very fast & accurate. I would recommend buy this heater for your tank depending on the size.
jesse chen
2025-08-21 16:47:47
I bought this for my 5 gallon tank and it heats up a little slow, still works fine in a 2.5 gallon tank.
Julio torres
2025-07-25 10:07:03
This tiny heaters are perfect for a small tankI was looking for something tiny for a 1 gallon pico reef tank and this was the perfect size for itkeep the temperature steady, I really like it a lot.
Amber B
2025-05-27 10:02:04
It worked great! Until it didn't work at all. And that only took a couple of days after I started using it. It now turns on but doesn't actually heat up. I woke up to my fish tank at 63F, so that was fun.
Mervon
2025-05-17 10:26:07
They work great and good price , temperature is maybe off by half a degree if anything
Carol L. Mccawley
2025-04-08 15:23:21
Need to preface with the fact that I have bought both the 10- and 20-watt version of these.I have a 2gal reef tank and the 20watt is a perfect little heater.The 10 watt I use to pre-heat water for water changes. At 2 gallons a water change that is not pre heated is quite the shock on the tank inhabitants.All in all, they are nice little heaters with a display that shows both the set temperature as well as the current water temperature.I will add, that at times the reading can be off by a degree or two. I think this is due to the fact that the heating element and temp sensor are in the same housing, so the reading might be taken at the same time it is heating, or at a time when it is not heating. This is a guess at best.I've compared it to two other reading from various thermometers (Stick on, and in tank) All three were one to two degrees off. So who knows.
jimw
2025-03-18 20:49:03
Works great, no complaints so far,
grabemily
2025-03-16 13:02:05
The suction cup is not very sucky and pulls off of the tank quite often.
Claudia Morel
2025-02-05 19:05:48
J’ai un aquarium 3 gallons et fonctionne bien.
Erika Carrillo Rodriguez
2025-01-19 11:06:47
Es funcional, pequeño, ideal para peceras pequeñas
FDNKARLA
2025-01-10 12:18:07
Hice una prueba de este mini calentador antes de ponerlo con mis tortugas para ver si funcionaba o si las podía quemar, pero nada de eso!!!, Es muy fácil de usar y si calienta el agua, tarda un poco , pero si la calienta, meti mi dedo en el agua que estaba con el calentador y despues en donde tengo a mis tortugas sin uno, y si hay mucha diferencia, te recomiedo comprarlo, vale mucho la pena
Mukil Madanan
2024-12-28 10:26:31
Product is only on looks. Not working. Need to contact amazon to get it returned or replaced.
Carl.l
2024-12-21 16:53:03
Dommage il Est mort apres 2 mois d'utilisation malheurement alors je donne 3 étoiles
Recommended Products