Review on JESTOP 100W Submersible Aquarium Heater with External Temperature Controller - Adjustable Mini Turtle Tank and Fish Tank Heater with Suction Cups for Saltwater & Freshwater by Erica Johnson

I installed this heater in my aquarium today. I am attaching a photo of the heater. The heater is easy to use. Set the temperature, and when the water temperature falls below this temperature, the heater will turn on, and when the water temperature exceeds the set temperature, it will turn off. The temperature controller is located on the power line with LED display. There is a built in safety setting that will prevent the heater from turning on if it detects it is not fully submerged in water. I am attaching a photo of the instructions. I will update this review when the heating goes out.