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Review title: Is it working?
Product review: Bought this along with a heater for my 5 gallon frog tank. The thermometer got here over a week after the heater came, even though i ordered at the same time. And now I am not sure it's working. I felt the water before the heater - very cold. I felt the water 24 hours later after the heater - much warmer. The thermometer never changed. If it were to work, it's small, grips to the side of the tank very easily.
