Okay, I just decided to put the filaments inside and add ALL the dessicant that was stored in the boxes. A tad overkill, but wasn't going to waste it, and I can delay buying 1kg silica gel (it's almost 40€ woth shipping and duties) Best part? Finally not having to worry about dust on my reels or samples!! I always never knew what the hell to do with them, now I can just reserve a spot for them. After confirming it will not plateau on that 21%, I'll start drying all the filaments properly.