Review on PAIZOO Digital Aquarium Thermometer: LED Display, High Accuracy, Touch & Sleep Mode, Temperature Sensor for Fish Tank by Victoria Bryant

Despite other reviews I have found that the 2 thermometers I bought are consistently off by 3 degrees. I checked with 2-3 other digital thermometers in the water (immediately nearby) to confirm this and each showed BOTH thermometers 3 degrees LOWER than either of the submersible thermometers: (They look great on tanks but I have to one thing to always keep in mind) is that they measure at the bottom, and i check other thermometers to make sure removing them would be a big problem now that they are so tightly attached