Review on Finnex Digital Titanium Aquarium HMH 500S by Shanee Cobb

This aquarium heater is amazing. Temperature setting is very easy and keeps the temperature within +/- 0.3 of the setting. The sensor is very accurate out of the box, as shown in comparison to my handheld Hanna Checktemp. I didn't have to calibrate it. Update: After a few months of use, the heating stopped working. I set it to 78 degrees Fahrenheit but the temperature in my tank is not increasing but slowly decreasing as you can see in the video. I will try to contact the seller and see if I can return it or exchange it for a working one.