Compact size aquarium heater 300W with controller, Shuts down when heater detects water is too low or out of water while plugged in,suitable for seawater and freshwater heating, betta fish and turtle tanks and other small fish tanks 20-60 gallon. Easy to operate: This fish tank heater is easy to use, 7Ft long cable wire and the external controller can easily set the temperature, and the temperature adjustment range is 68-93°F.When the set temperature is reached, the temperature will be kept constant automatically. Easy to read temperature: This fish tank heater has Digital LED temperature display, which can display the real-time water temp and set temp, so that you can know the temperature changes in the fish tank easily. There is also a clear heating indicator on it. Fish-friendly: This aquarium heater is made of thickened quartz glass, and has good sealing performance to prevent water from entering, making it a more fish-friendly heater.The upgraded version comes with a protective
