Negative Positive
Title: Lasts about 1.5 to 2.0 years
Review: Like the others, I enjoyed the size of the display. I also liked the fact it displayed both the room temp. and the aquarium temp. (in/out temps) I liked my 1st one so much, I bought another for my 2nd aquarium. But like the other reviews, both thermometers began reading high and/or low. Cleaning the sensor helped a bit but only for a day or so. As for my use: 2 freshwater tanks, prefered temp. is 78F to 80F, heaters are 1.5x the size needed to regulate a tank the size it is used in to minimize heating time, room temps are kept around 71F in winter, 76F in summer.
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