I'd like to hear some comments on when each is more appropriate. I've looked and without a search feature, I'm not finding anything discussing benefits of each one.
I'm thinking (scary I know) that 70% beads will make managing RH down to the 65% to 68% range easier where 65% beads would/might be harder to keep up to the 65%-68% range.
I have a smaller, 25-30ct humidor with the glass top that I'm having hard time now, keeping much above low 60% range, and my big 100 ct that I can't keep down below 72%-73% on top and 67%-68% on bottom. I figure, adding a tube on top and bottom charged accordingly will allow me to balance the RH in that one and keep a tube or 2 in the small one will allow me to manage the RH up, in the smaller one.
What say you?