When I drip I use 6mg, but that's because the concentration and the amount of vapor that comes from a mechanical/atty is a thousand times larger then what comes out of something like a kanger aero tank on a vv/vw. I'm not saying that something like a kanger aero tank doesn't produce an acceptable amount vapor, it just seems that I need a higher level of nicotine when I use something like that (which I do). I use 24mg on my dna30 & provari in an aero tank, usually in the morning with coffee or something like that. I have 12mg in a kayfun on a mechanical that I vape throughout the day. 6mg wouldn't be enough for me right now in a rba, but it is in an atty.