Quick Summary
This is a 2 pack of 10W USB mini aquarium heaters for very small tanks, with a built-in thermostat and a stated constant temperature of 26°C. The heaters are described as suitable for tropical fish, Betta tanks, turtle tanks, salt water and freshwater, with a stated tank size range of 1-5 litres.
The compact heating rods are intended for underwater use and come with a suction cup for installation. The stated power setup uses USB and a 5V low-voltage connection, with a 115 cm cable.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Pack quantity | 2 heaters, so the quantity matters if you need a pair or a spare. |
| Power | 10W, which is the stated heating power for each unit. |
| Temperature | Constant temperature of 26°C, with a built-in thermostat. |
| Connection | USB power design using 5V low voltage. |
| Cable length | 115 cm cable, which affects placement near the power connection. |
| Size | 18 x 95 mm, suitable only where a very small heater is needed. |
| Tank size | Stated for 1-5 litre aquariums. |
| Installation | Supplied with a suction cup for underwater placement. |
What to Compare Before Buying
- Tank capacity: This model is stated for 1-5 litre aquariums. Compare that range with the actual water volume of your tank.
- Power setup: It uses USB and 5V low-voltage power. Check that you have a suitable USB power source available.
- Quantity: The pack contains 2 heaters. Make sure that matches the number of tanks or backups you want.
- Size: The heater measures 18 x 95 mm, so check the space available in a small aquarium layout.
- Water type: It is described for salt water and freshwater, so confirm that matches the aquarium you plan to use it in.
Before You Decide
Confirm the tank volume, the USB power arrangement and the 2-pack quantity before choosing this heater. The stated 1-5 litre range makes it a very small-tank product, so it is worth matching the size carefully to your aquarium setup.





