It seems to be vendor related rather than PG/VG ratio. For example, I filled up my tank yesterday morning with Halo Tribecca and it lasted me until 5pm when I was leaving work for the day. Today, I filled up my tank with MBV's Ecto Cooler (65/35, PG/VG) and I already finishined the tank off and it's not even noon. Same vaping habits, same wattage, same mod, but a significant difference in juice consumption. Can someone explain this? I'm worried that I'm consuming more nicotine than I need to.