I bought the same one most folks here have. The $12 one from wally world. Anyone have problems with theirs? Mine seems to be very inconsistant some times. I have had my 1588 on for two days and the temp has been holding at a steady 99.9*-100.0*..Then all at once my accurite starts reading 99.0*-99.1* Not the first time its done this. First time I thought maybe it was just a fluke. I put my other terrarium therm in there and its reading a steady 99.9*-100.0* but the accurite is still around 99.1...Anyone else had troubles with this therm reading like this?