When it comes to sub-ohm vaping with the Geekvape T200 Kit, it is recommended to use a high VG (vegetable glycerin) vape mix. VG provides thicker clouds and smoother vapor production. A common ratio for sub-ohm vaping is 70% VG and 30% PG (propylene glycol). This blend ensures optimal vapor density, flavor delivery, and a satisfying vaping experience.