Hello, I'm really glad I found this forum you guys have helped me quite a bit. vaping is the best thing since sliced bread, now I can smoke around my friends without them having to put up with the smell of cigarettes
I've searched around the forums and haven't found a solid answer for my question, hope you guys can help me out.
so when do you have to replace the cart filler material?

so when do you have to replace the cart filler material?