Boyd Enterprises Chemi-Pure Elite 3.1 oz. carbon and ion filter medium comes pre-packaged in a nylon filter bag. Removes copper, metal ions, odors, medications, and all pollution. Chemi-Pure Elite is the same as Chemi-Pure, but additionally with ferric oxide to remove phosphates and silicates. This size is a great choice for nano tanks (tanks under 10 gallons).
