Originally Posted by mithrilG60

The only time you should have to add moisture is if: a) you have a bad seal/leaky humidor, b) you open the humidor ALOT and leave it open for long periods of time. If your RH does drop, and stay, at a lower level than you want you just need to put the beads in a sealed container with a water soaked sponge for a few hours to increase their water saturation. When you put the beads back into the humidor your RH will raise as the beads shed moisture in reseeking equilibrium.