Aqueon Replacement Betta Filter Cartridge, 2 Count

These Aqueon Betta Filter Cartridges are replacement carbon and sponge cartridges for your Aqueon Betta Filters (sold separately). The filters are designed to help improve your finned friends’ water quality with Aqueon Betta Filters Cartridges, which is why it’s always a good idea to have some backup cartridges, just in case! The replaceable carbon and sponge cartridges not only help keep your betta buddies’ water clearer, but they also help to keep their water cleaner, too.