Review on HITOP Adjustable Aquarium Heater - 50W, 100W, 300W - Submersible Fish Tank Heater with Suction Cups & Thermometer Sticker - For Fish Tanks up to 60 Gallons by Melissa Warren

Works well. I liked the size and the operation was simple and straightforward. The only thing I've got are damn jerks. They don't stay put. I'm glad I got them (2) when I did. The nights in the Hudson Valley are starting to get cold. I think it will be an early cold and snowy winter. I need my turtles to be comfortable. Actually, the turtles of my adult children. Highly recommended. The temperature stays the same. No extremes.