Imperial Garden Products from Ocean Star International Toxic Ammonia Absorber

Imperial Garden Products from Ocean Star International Toxic Ammonia Absorber for your Freshwater Aquarium or Pond. Removes ammonia that builds up from fish urine that can kill the fish in your aquarium or pond habitat. 1lb mesh bag. From the Manufacturer: Made of an ion exchange material(ZEOLITE) that rids the tank or pond of ammonia produced as a waste product by the fish. For freshwater only. Can be recharged and reused. Mesh filter bag included. The bags in this box will treat 80 gallons of water(303L). More filter bags can be used with no harm to tank.