The Tétra Whisper Bio-Bag Filter Cartridges in size medium are designed for aquariums with a tank capacity of 5-15 gallons. These external filter cartridges are suitable for all water types and come in a convenient 3-pack assembled for easy maintenance. Made by the trusted brand Tétra, these cartridges effectively filter water to provide a clean and healthy environment for fish and other aquatic animals. Ideal for keeping your aquarium water crystal clear and promoting a healthy ecosystem for your aquatic pets.
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