Review on Dr Moss Freshwater Submersible Temperature by Elizabeth Johnson

The box says "Layli", not "Doctor Moss". I tested it in some water and it didn't change temperature at all. Impossible to tell as there is no thermometer on it. I think you should just think it's 25 or 28 degrees Celsius. So I won't use it. The power cord isn't even long enough to fit in the tank, but still get out and along the wall to the outlet. So you should have a very short tank and the plug should be right under it. Not a good buy.