i have a worrying problem : My drybox reading (analogue hydrometer) is always move between 50 - 70% even i did not open the box.. ie. it can be 70% in the morning then to 60% and sometimes when i open the box, it dropped to 50%...up and down.
I also have some silica gel inside and the switch is on max. so dun understand why the reading is still so high.
Shld I change a new box since its with me at least 3-4 yrs already? or wat shld i do??