Aquatop Pisces Aquarium Filter Replacement Cartridge 2-Pack - PCS-RCI, PCS-3G, PCS-5G, PCS-5GB & PCS-5GC

PISCES Replacement Carbon Cartridge for the Aquatop PCS-3G PCS-5G PCS5GB and PCS-5GC. Packed with premium carbon. These carbon cartridges should be replaced once monthly or when they become too dirty. Item is 1 in and 10.84 g.