Above 70% VG isn't recommended because VG is thicker than PG, that makes it harder for a small coil to vaporize. It’s also not proposed to go about 50% in PG as you may well knowledge leaking due to small viscosity in the juice. More Gains include things like needing http://www.google.com.lb/maps/d/viewer?mid=1ilVurhux_ZqmzVgad1KE7k6NV_NFdB8&ll=16.08376698514189%2C105.80356199999999&z=5