qa2744 Posted November 6, 2020 Report Share Posted November 6, 2020 How's this for confusing? The one on the left is brand new, the others vary from 1 year old to 4 months old. I'm going to go buy a glass floating thermometer today to see if any of these are right FWIW - the heater is set at 85 degrees and has been running for two days. So either the heater isn't doing the job or all these digital devices aren't that good (or maybe both) Quote Link to comment Share on other sites More sharing options...
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