I've been having to refill my carto like crazy... Everything I can find says that with a carto, you should be getting like 200 puffs per fill. I would estimate that I'm getting less than 50. It's kind of becoming a pain. I'm using an Aqua Vapor Classic, which is like a cigarette, so I'm guessing it's not some super machine. My ADV that this has been happening with is 80pg/20vg, 18mg nic. Is it time to upgrade or am I doing something wrong? I've heard the better the mods, the more juice you will use. I'm still pretty new to vaping, but I've tried slowly filling it, like 3 drops at a time, then let it sit for a few minutes and repeating that until it starts coming out the bottom of the carto. I'm getting great vapor and flavor production but, it just doesn't last!