50W Mini Aquarium Heater with External Controller J48800

【Quartz glass heater】: The heating device is made of heat-resistant quartz glass, explosion-proof and strong thermal conductivity. It can be used for 6-12 gallon glass or acrylic fish tanks. 【Easy to operate】: This heater is different from traditional heaters. It is designed with an external controller for temperature display and temperature adjustment, which can freely adjust the temperature you need (68°F-93°F). 【Intelligent temperature control】: The heater effectively maintains the temperature you preset before, and stops heating when the water temperature reaches the preset temperature, and restarts heating when the water temperature is lower than the preset temperature by 2-3°F.The red light on the LED screen indicates that the heater is heating, and the blue light indicates that the heater has finished heating and is in a constant temperature state. 【Note】: Do not operate or leave product plugged in when your water tank is out of water, heater should be fully submerged into water. It is better to install a water pump to help water circulating while heating.