Franken-bator not retaining humidity.

Looks like my second hygrometer is perfectly calibrated.

Neither of the thermometers are calibrated well, but I don't need them for that.
IMG_7717.JPG
 
I’m not quite sure how I would calibrate a digital one or the little spring one I have. :oops:
Salt in a zip lock bag?

eta.
I was late to this party.
Glad you did the test!
WOOT
 
I've got two of them going. I know my humidity is lower because 1) I'm not getting condensation on the sides and 2) the water is evaporating much quicker than before.

I have a third Thermometer/hygrometer that I'm going to salt test tonight.
:celebrate
 

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