A set of two fine-mesh nylon media bags designed for the AquaClear 30 power filter. These reusable bags are perfect for holding loose filter media such as activated carbon, biomax ceramic rings, or peat granules within the filter chamber. The drawstring closure keeps media securely contained, preventing particles from escaping into your aquarium. By using these bags, you can customize your AquaClear 30’s filtration with ease and perform clean media changes without mess. (Fluval AquaClear 30 Filter Media Bags, 2-pack)