This carbon will work in other systems besides the jbj nano cube. Comes in a mesh type bag for easy use.
Carbon can only be used for so long and must be replaced in an aquarium setting. What happens is carbon can only hold so many contaminants then it starts leeching back into your water column. Believe me your fish do not like that.
Replace your aquarium carbon every month to avoid this.
Can be used in freshwater or saltwater applications.
Does not have to be used only with the nano cube.