I vacuumed this morning at 6:30 and put in 7 quarts of bleach. By 4:00 pm, the pool was full and I could see a layer of brown on the bottom. It's almost 7:00 pm, I've had to let more water out of the pool (so much for the bleach!), and it's still raining cats and dogs. I'm setting the alarm for 3:00 am ... thanks so much for all your encouragement everyone!