SeaKlear Yellow Klear Algae Control, 2 lbs For use to control and prevent algae growth and to maintain clear water in swimming pools For use to control and prevent algae growth and to maintain clear water in swimming pools Sodium Bromide formula Algae treatment solution to remove visible algae accumulations Effective against yellow and green algae Simple and easy to use Add 4-ounce per 10000-gallon of pool water, close to the affected areas For severe accumulations, add 8-ounce per 10000-gallon