yep ! every tank I have ever had with the exception of my crown mini (using one of the ones it came with about a month now).and my nautilus x,the one that came with was fine.otherwise,like tam,I set them aside for a rainy day . I did learn that the hard way though!but I did learn the hard way also,that some of the factory coils that come with the cotton is packed too tight,and it's a wicking issue,when I do use them I take a safety pin or a regular sewing pin and pierce the wicking ports.it works for me lol,when I do get to them,also I keep them in a baggie so I know they are the ''issue" coils hahaha.