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slide 1 of 2, Penn Plax Filt-a-Carb Undergravel Aquarium Filter Cartridges, 2 ct

slide 2 of 2, Penn Plax Filt-a-Carb Undergravel Aquarium Filter Cartridges, 2 ct

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Penn Plax Filt-a-Carb Undergravel Aquarium Filter Cartridges

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Filt-a-Carb Undergravel Filter Cartridges are made with top quality activated carbon designed to remove harmful gasses and odors, while clearing up unsightly discoloration in your aquarium.

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