Photo 1 of 3.1 Lbs Pool Filter Balls for Sand Filter, Eco-Friendly Sand Filter Media Cartridges Replacement for Swimming Pool Filter Pump Aquarium (Equals 110 lbs Pool Filter Sand) 3.1 Pounds

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Photo 1 of 3.1 Lbs Pool Filter Balls for Sand Filter, Eco-Friendly Sand Filter Media Cartridges Replacement for Swimming Pool Filter Pump Aquarium (Equals 110 lbs Pool Filter Sand) 3.1 PoundsPhoto 2 of 3.1 Lbs Pool Filter Balls for Sand Filter, Eco-Friendly Sand Filter Media Cartridges Replacement for Swimming Pool Filter Pump Aquarium (Equals 110 lbs Pool Filter Sand) 3.1 Pounds