Review on Hygger Digital Temperature Controller Aquarium Heater - Shatterproof Titanium Tube, Submersible Fish Tank Heater for 60-180 Gallon Tanks, 500W 800W Power - Ideal for Saltwater and Freshwater by Tammy Formigoni

False advertising! I bought 1 and had to replace it because it was getting rusty. This one was COMPLETELY submerged in the swamp and somehow thinks it's out of water. What does that mean? My aquarium has been running without heating for 48 hours, the current temperature is 70 and falling. I hope I don't lose anything. DO NOT BUY