It was time to do the regular change out of the green foam in my Cigar Oasis II XL before mold developed. I read on another forum about using floral water beads as an alternative, and that these are less prone to mold, so I thought I would give them a try.
The packet below (pic 1) was purchased yesterday at WalMart for $3.99. It is about as big as a seed packet. I poured only 1/3 into my Oasis (pic 2) along with 1.5 quarts of distilled water. Within 6 hours, these rice-sized beads absorbed 40x their weight in H2O, and filled the entire container up (pic 3). I don't see it to be any different as a water retention medium than green foam, but I'll report back later on the success of this.