Photo 1 of 6Pcs 4 Inch Ring Filter Socks 200 Micron, Aquarium Felt Socks, Aquarium Filter Bags for Freshwater Saltwater Aquariums Fish Tank, Sump Filter Socks, Use in Ponds Overflows, 4 Inch Ring by 7 Inch Long

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Photo 1 of 6Pcs 4 Inch Ring Filter Socks 200 Micron, Aquarium Felt Socks, Aquarium Filter Bags for Freshwater Saltwater Aquariums Fish Tank, Sump Filter Socks, Use in Ponds Overflows, 4 Inch Ring by 7 Inch Long