Aqua One 117s Sponge Aqua Nano

Compatible with the New AquaNano 40 aquarium and designed for use with 102c and 1c slide-in filter media cartridges, this genuine Aqua One 117s sponge pack contains 1 sponge and offers an easy way to maintain effective filtration. It helps remove waste particles from the water and should be replaced every 8 weeks for best results. The sponge can be cleaned in aquarium water to help maintain flow, but it should not be washed under the tap as this can damage beneficial bacteria. Over time, if the foam becomes harder to rinse or its structure begins to collapse, it should be replaced to keep the filter working properly and help prevent reduced water flow or pump strain.