Keep your aquatic pets happy and healthy with the Tetra Whisper Assembled Bio-Bag Water Fish Filter Medium Cartridges. These cartridges are designed to efficiently filter up to 10 gallons of water in your fish tank, ensuring clean and clear water for your fish to thrive in. With its unique design, these cartridges are easy to install and replace, making maintenance a breeze. Crafted by the trusted brand Tetra, these filter cartridges are the perfect addition to any fish lover's collection. The 3 count pack is new in box, ready for immediate use. Designed to work with all water types, these cartridges are ideal for any aquarium setup. Order now to ensure your aquatic pets have the cleanest and healthiest water possible.