GLB Pool & Spa Products 71408 1-Quart Drop n' Vac Pool Water Clarifier Non-alum flocculent will not affect water balance. Safe for all pools including peroxide-based sanitizers. Use for bugs and debris - then vacuum away! Application: Shake bottle well before applying. Pour the appropriate amount of Drop n' Vac (10-Ounce per 10,000-Gallon) into a bucket of water. Empty contents evenly over entire pool. Run pump for 2 hours and then shut the pump off. Allow unfilterable material to settle overnight. Set the filter in WASTE or DRAIN cycle and vacuum to waste all settled debris. Clean the filter and begin normal operation.