The ProTank 2 carries offically 2.5 mls, and you can squeeze in 3 mls. The regular large Davide carries 3 mls? Have noticed since rebuilding my coils and using cotton, get better flavor, longer lasting coils and quicker depletion of my juice! Still, not as quickly as the Nauti's vertical coil. However, the Nauti coil will give me a wider range of power useage and possibly last longer. Have vaped 48 hrs and now about to start next 24. By this time, I would have changed out my cotton wicks twice. 



How is that even possible?? 


