Clear & Sparkle restores spa water clarity and helps to refresh murky water. It also helps your filtration system trap suspended microscopic particles. Add just 2 oz. per 800 gallons. Allow product to equilibrate overnight. Results are usually apparent after 2 or 3 filtration cycles. Reapply to hot tub twice weekly or as needed for water clarity. Replaces Clear Spa and Leisure Time Bright & Clear.