Chemiclean Aquarium Treatment is a trusted solution for removing cyanobacteria from both freshwater and saltwater aquariums. It effectively eliminates the unsightly bacterial films that can form in tanks, restoring clarity and cleanliness. Safe for use as directed, Chemiclean helps maintain a healthy aquatic environment and is a go-to choice for aquarists looking to combat cyanobacteria. Treats 300 gallons.