Never knew submerging them worked. I'm going to give it a try but with a twist. I have a four stage water conditioning system for my home, and an additional 6 stage reverse osmosis system in the kitchen. I am going to try it with the reverse osmosis water. The Boveda packs have a reverse osmosis membrane, so I figure it should be fine, but I'm not a scientist, chemist, biologist or engineer. Hope it works. Free refills on my bovedas!