Photo 1 of 1.5 lbs Pool Filter Balls Media Filters Environmental Protection Filter Media for Swimming Pool Aquarium Filters Alternative to Sand(1.5 Lbs Filter Balls is Equivalent to 50 Lbs Filter Sand)

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Photo 1 of 1.5 lbs Pool Filter Balls Media Filters Environmental Protection Filter Media for Swimming Pool Aquarium Filters Alternative to Sand(1.5 Lbs Filter Balls is Equivalent to 50 Lbs Filter Sand)