I'd recommend lowest setting that produces enough vapor to your liking - higher settings can "burn" around the heating elements and clog throughput. I've found 2.0 to be appropriate, but different cartridges might work with different voltages more efficiently
I'd recommend lowest setting that produces enough vapor to your liking - higher settings can "burn" around the heating elements and clog throughput. I've found 2.0 to be appropriate, but different cartridges might work with different voltages more efficiently