How can you not be sure when to refill the beads? If your humidity is dropping and the beads are white, add water. If your humidity is too high and the beads are dry, let them air out a bit. If your humidity is where you want it, keep the beads in that condition. It really isn't that difficult. Sorry if I sound like an ass, but it isn't a difficult concept to implement once you have been given directions.
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