My girlfriend recently started vaping with an ego one, the original was the round one and it rolled often and would start to malfuction if it hit the tile floor. She bought a new battery called a coolfire 4 and used a new ego one tank. She likes the way it hits and has quit smoking. Her issue is a very high consumption of ejuice. She filled it up today at 1pm and it was empty at 5, is this normal. she is currently using the .5 ohm coil. She is annoyed at how my juice it is taking. Any suggestions. I have searched the forum but didn't feel any of the questions hit her problem exactly. She currectly has the original ego one, and the coolfire 4 battery with the ego tank as well, she used .5 ohm coils in both and they both seem to burn a lot of juice, you can even here a sizzle when using it. Is this normal? Should she try a 1 ohm coil? If she does use a 1 ohm coil can she increase the nicotine amount to higher than 6mg? Any help will do, she asks me to work on it and I don't have the knowledge. She seems to have to work it on a lot, and filling it up constantly results in spills often? Any help at all will be appreciated.