Keep your freshwater aquariums and ornamental ponds clean and clear with the Top Fin AlgarGone. AlgaeGone controls many types of algae in freshwater aquariums and Koi and Goldfish ponds. Will not harm fish or aquatic plants. Only at PetSmart. Features: Will not harm fish or aquatic plants Includes: 1 -Jug of AlgaeGone Intended For: Freshwater aquariums and Ornamental ponds Weight: Net Wt. 16 fl oz (473 mL) Warning: Keep out of reach of children. See back panel for precautionary and first aid statements. Active Ingredients: Poly[oxyefthylene(dimethyliminio)ethylene(dimethyliminio)ethylene dichloride] 4.50% Other Ingredients: 95.50% Size: 64 Fl Oz.