Review on 🐠 auomii Mini Submersible Aquarium Heater with Built-in Thermometer, 50W/100W Small Fish Tank Heater, Intelligent Frequency Conversion, 2 LED Temperature Display, External Temperature Controller by Jenny Gase

This is an amazing heater because when the power flashes or is cycled it automatically remembers the last temp setting instead of one select random number. I have another heater that I paid more for and would have had to turn it off if I was going away for the weekend because it was automatically set on high. So if the power went out my fish would basically be cooked when it came back on if I hadn't caught it. It's also quite small for the type of heater (digital display).