Photo 1 of Tetra Whisper Bio-Bag Filter Cartridges For Aquariums - Unassembled Medium (Pack of 12) 12 Count - Original Medium

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Photo 1 of Tetra Whisper Bio-Bag Filter Cartridges For Aquariums - Unassembled Medium (Pack of 12) 12 Count - Original MediumPhoto 2 of Tetra Whisper Bio-Bag Filter Cartridges For Aquariums - Unassembled Medium (Pack of 12) 12 Count - Original Medium