I've recently started to rebuild my own coils on a protank. So I end up replacing the coil and cotton wick about every 4 days or when I change flavor. I'm sure I could go much longer but I can rebuild a protank coil in about 5 minutes or less and its super cheap anyway.
For now I'm just hanging onto juice I didn't like to either revisit it or for a emergency stash
For now I'm just hanging onto juice I didn't like to either revisit it or for a emergency stash