About This

• 【100W mini aquarium heater】It is designed for 20 gallons aquarium tank. Temperature can be accurately adjusted from 64 to 93°F. This heater works well in both saltwater and freshwater. Rated voltage 100-130V.
• 【Super small size heater with protective case】Only 4.6 inches long for 25W/50W heater, 5.9 inches for 100W/150W. Very compact size. Takes up less space, easy to install and easy to hide in the tank. Perfect for mini fish tank. It comes with a protective case to keep your aquatic pet and you from getting burned. Shatter-proof, shock and vibration resistant.
• 【Automatic maintain a consistent temperature】Built in thermostat with 1°F accuracy. It keeps a constant temp in the aquarium. It adopts PID control strategy, so the temperature fluctuation range can be reduced to 1°F. The heating is automatically stopped when the set temperature is reached.
• 【Easy to adjust and readout】The external controller with LED digital display and setting button helps us to easily read and change the temperature. The heater has a memory function and will remember the temperature setting. No need to reset the temperature after power lost. It also has an option to switch between Fahrenheit and Celsius by pressing and holding the button.
• 【Overheating protection, lack of water protection】 Automatic shut-off when the water level gets to low or overheating. Protect the aquatic pet, and never cook your fish. Very safe in daily use.