Review on 🐠 SZELAM 200W-800W Submersible Aquarium Heaters with Thermostat & Overheating Protection for 26-211 Gallon Fish Tanks - Fast Heating Betta Fish Heaters by Amy Mears

I am very happy with it. During the winter my 120 gallon tank was 75 degrees while my house oscillates between 60 and 72 degrees. It sits in my acrylic pan directly opposite my skimmer and hasn't had any overheating issues thanks to the plastic cage built around the heater. It has intuitive settings and it's nice to be able to look under the tank and see the digital temp and know it's working. I also like that it remembers its settings without power as I turn off the tank power completely when doing water changes etc.