Digital themometer question

[btodd43]

Hello- I've been using the JBJ inside the tank digital temp thing (oval shaped with suction cup) And deceided I didn't want to look at it anymore so I bought the lifegard little time-temp and put it in. Whoa the life gard says my tank is at 82.5! With the JBJ it said 79.5 why the difference? And now of course which one is right? So I deceided to buy an accurate 0-220 degree glass thermometer($20.00) ouch! to test and see which one is right Anyone have simular experiences?
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grapefruit plant

 

[Anonymous]

The type of digital thermometer we use in the hobby is notoriously inaccurate. Your experience is not unique. That 0.1F resolution on the display mislead people to feel good about the gadge.

 

[btodd43]

Yeah- thats what I figured "join the club" I am a machinist by trade and these things will make me go mad.... It HAS to be- there-, on the money ect. $2000.00 invested in a 6 gal nano cube and if I have to buy a $1000 temp guage I will :lol:
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Tippmann C-3