So I my Dad had a coworker hand-build me a (fucking sweet, if not basic, but SWEET!) humidor as a Christmas present when I was a teenager. He also had my Dad purchase a Credo humidifier (just like the larger square one you have in this video, more or less...) - after a decade of both use & neglect, I purchased a pair of smaller, circular Credo humidifiers that look just like the black circular ones you have here. It was impressed on me as a teenager that Credo is one of the famous names in the Cigar industry and the ONLY acceptable humidification solution.... So I again went with Credo ... big mistake. In the smaller Credo circular ones, the foam or material inside was clearly white. And very rapidly, I wound up with obvious mold. So I went to Credo's website and sent them a mail - basically just asking them to honor their warranty and replace them. The things were like $25-30 USD a piece, so not all the money in the world here. I was contacted by a French dude who was some sort of rep for Credo, who basically told me I had to diagnose whatever I was doing wrong to make their product fail ... I politely replied - I don't really have any problems, I don't think I'm doing anything wrong, I'm just saying, I've recently bought a new pair of Credo humidifiers, and they went moldy soon after use ... and the dude basically said, "Well I am not trying to be rude but you obviously don't know what you're doing, it's impossible for our products to acquire mold unless the end-user is using them improperly, abusing them, or the conditions of your humidor are unacceptable or negligent. So I was just offering you to help fix whatever you're doing wrong, the problem isn't our products..." === Yeah , no dude, thanks for nothing. So ever since then I'm like Fuck Credo. I think I might try your method, just repacking with beads.
This is exactly what I was looking for! I was wondering about the ratio humidor/bead but I'll use the humidifier as a measurement. I have the same round humidifier that you had trouble opening. If you use a screwdriver, you can lever it open. You just have to go slowly and work all the way around.