300W aquarium heater made of thick glass, aquarium heater with external controller, thermostatically controlled aquarium heater for freshwater and saltwater aquariums (150–300 l)

This 300W aquarium heater is suitable for fish and turtle tanks from 150 to 400 liters. It is corrosion-resistant and rustproof. The heater can be used in both freshwater and saltwater aquariums, offering a wide range of applications. [External Temperature Controller] Unlike conventional aquarium temperature controllers, this heater features an external temperature control. This makes operation easier and keeps you dry. Temperature setting range: 20–34 °C (68–93 °F). [Robust and Reliable Material] The heater is made of 2 mm thick real glass and has a diameter of 2.8 cm – making it thicker than conventional glass heaters. The 10-strand branched heating wire structure ensures a more even temperature distribution.

[Automatic Temperature Control] Once the set water temperature in the aquarium is reached, the immersion heater switches off automatically and the indicator light goes out.

If the temperature sensor detects a drop in water temperature, the heater switches on automatically and the indicator light (orange) illuminates.

[Complete Accessories] Included in the package are a 300W aquarium heater with a 1.75m long power cord, an external controller, three suction cups for securing the heater, a thermometer strip for monitoring the water temperature, and a protective cover for the bottom to protect the heater and your fish.

Indicator light	When you set the temperature, the red light illuminates and indicates the set temperature. Orange light on – operating status; orange light off – operation stopped.
Anti-collision device	The white quartz cotton effectively prevents the inner ceramic and outer glass tube from colliding. The protective bottom cover prevents direct contact between the heater and the aquarium.
External controller	Unlike conventional top-mounted temperature controllers, this aquarium heater features an external temperature controller. Simply press the red button on the controller to set and adjust the temperature. 1.75 m power cord: Longer than most aquarium heater power cords, making it more convenient to use.