Photo 1 of 16 Pack Rite Size C Aquarium Filter Cartridges Compatible with Marineland Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350, EZ Change #3 Replacement Filter Cartridges

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Photo 1 of 16 Pack Rite Size C Aquarium Filter Cartridges Compatible with Marineland Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350, EZ Change #3 Replacement Filter CartridgesPhoto 2 of 16 Pack Rite Size C Aquarium Filter Cartridges Compatible with Marineland Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350, EZ Change #3 Replacement Filter Cartridges