my green swamp is starting to clean up a bit, it's now kind of a white/light gray swamp. i'm just keeping the bleach coming and hope for the best. anyway, i was reading jasonlion's "turning your swamp into an oasis" article (very informative, by the way). he says to get your cya adjusted, but to not put the stabilizer in the skimmer, cuz you'll lose alot of it because of the backwashing involved with this clean-up process. this makes sence. so here's my question - he says to put the cya in a "sock". are we talking about just a regular ol' sock or is the "sock" in question a term for a special product i'd need to buy at a pool store, or is it just a sock, like i'd get out of the sock drawer in my closet? thanx for the info.