Natural Chemistry 03122 Pool First Aid Clears Cloudy Swimming Pool Water, 2-Liters Pool First Aid quickly cleans and clears pools that have a bad algae bloom, waterline build-up, or other water contamination Helps clear water of dead algae, paint, oil, diesel, suntan oil, and other agents Removes scum and black water lines and frees clogged filters of oil and other organic build-up and is also non-toxic and non-irritating 2 Ounce per 1, 000 gallons; 1 capful treats 2, 000 gallons Use every two days until water is clear; do not use immediately before or after shocking