Replacement filter media set for a 2-layer filter, ideal for turtles. - Model Name: Turtle Filter PLUS - Set Contents: 1 set of replacement filter media - Suitable for: Ideal for turtles - How to use: 2-layer filter optimal for water purification Thank you for viewing. Although unused, the box has dents and scratches. Please understand that this item has been stored at home, and we appreciate your purchase.