I only vacuumed to waste once. I have kept my chlorine around 20, CYA 30. I do brush daily. I barely had any today. I used to come back a couple of hours after I swept. Use bleach calc to determine shock amount. Keep at it- mine took about a week. We did swim at 20 pm. Some irritated eyes but that's about it. I'm waiting till it gets down to 5 from now on!