Aquascape Waterfall and Rock Cleaner for Pond Maintenance, PRO Contractor Grade, Fast Results, 9-pounds | 30413 Spot-treat the trouble areas on water features Quickly dissolves debris from waterfalls and rocks and reduces pond maintenance Goes to work instantly Easy to use One (1) containter treats 3,650 sq. ft - One (1) scoop treats 151-200 sq. ft. Made in the USA