Submersible Aquarium Heater for 1-40 Gallon Fish Tank

The 25W Aquarium Heater's heating element is composed of explosion-proof quartz glass tubes and a high-temperature resistant ceramic heating core, utilizing the latest submarine technology to provide fast, consistent, and evenly distributed heat. Housed in V0 grade ABS flame retardant plastic, the fish tank heater is IP68 waterproof, corrosion resistant, and high-temperature resistant, making it a durable and reliable choice.

The heater comes with overheating and out-of-water protection features. When the aquarium heater head is out of the water, the heater will automatically stop heating, and the controller will display "E1" until the heater is completely submerged. If the water temperature exceeds 34°C/94°F, the heater will automatically stop heating, and the controller will display "HH" until the water temperature drops below 34°C/94°F.

The heater features a precise temperature control system with an M2 grade precision water sensor, forming an accurate water temperature sensing system. The Automatic Constant Temperature Function ensures a temperature accuracy of ±1°F, where the adjustable aquarium heater will automatically stop heating when the water temperature is higher than the set temperature, and restart heating when the water temperature is lower than the set temperature.

The digital LED controller allows for a temperature range of 63-94°F/17-34°C, with the ability to switch between °F and °C by long-pressing the setting button for 5 seconds. The LED display can show the current water temperature and the set temperature simultaneously, with a red light indicating that heating has started and a green light indicating that the temperature is constant. The memory function automatically retains the previous setting when the heater is restarted, eliminating the need for repeated setup.

Suitable for 1-15 gallon fish tanks, this 25W fish tank heater can be widely used in freshwater and saltwater fish tanks, turtle tanks, and aquariums. The heater's 6.8-inch length and strong suction cups on the heater guard make it easy to install on the tank walls or bottom.

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