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Title: Be sure to calibrate
Review: Got this as a father's day gift. I had trouble getting the humidity up to the recommended 70%. I was only getting 50% (or so I thought). Turns out after I used the instructions to calibrate the hydrometer it read a perfect 71%. It was off a whopping 20%.Works great now.... I used the propylene glycol / distilled water mix (by Madelaine) to fill the humidor. Great deal for the price Amazon is selling at. Love the smell of the spanish cedar.
