Photo 1 of Fluval U2 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A490

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Photo 1 of Fluval U2 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A490Photo 2 of Fluval U2 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A490