The South Ocean Five Filter Bag can be used for various media, such as phosphate removers, nitrate removers, carbon and ammonia remover.  Perfect for sizing down Chemi Pure.  It prevents filter mediums from spreading and is made of heavy nylon for better water flow.

• Works with various types of media
• Fine mesh nylon for better water flow
• Prevents filter medias from spreading
• Easy to close
• Individually packaged, sold one each