druturn

Your hygro may indeed be off. I have the exact same hygro in my humi and when I tested it with a boveda pack, it turned out to be about 4 points too high. Instead of sending it in, I just take in the 4 points into account when setting the humidity. Although they advertise it as being perfect, it is merely a ploy from preventing you from actually testing it and seeing how off it is. Once you find out how off it is, it will stay that way. Mine has been perfectly 4 points off since buying it over a year ago.(I have tested it numerous times and it resulted in the same 4 point differential)