Crystalclear AlgaeOff String Algae Remover, 25 Pound

Crystal Clear Algae-Off is made to help remove algae from waterfalls, steams and rocks in seconds. Use maintenance dosage once a week to remove the need for complete pond shut down for yearly clean-out. It is also designed to help keep fountain intakes clean and remove scum and algae from the perimeter of any size pond. Algae off is designed to immediately remove string algae, help eliminate green water and it works immediately on contact. Non-Toxic to fish and is EPA Registered, with a 3 year Shelf life.