What does 80/20 PG/VG mean ? I have PI 54mg TW liquid (not sure if its ag,vg or pg) and I use AG diluent. Can some1 explain those ratios to me? For example to make 5ml of liquid at 20% flavour I use - 1ml flavour, 1ml Nicotine, 3ml diluent. Is that correct and good mix for tank? Also what diluent do you guys like most?