Hi everyone, just got two mini tanks in the mail today , and am conducting a little experiment to see how long the .9ml of liquid lasts, and how long the battery lasts. The first fill I did as soon as I got it I didn't keep track of how many drags I took, and in a span of 2 hrs, I went from .9ml to .4/.5ml. I refilled the tank, and now I'm keeping track. I'll post the results here for anyone who's interested, just let me know. The questions I have are 1, while I didn't keep track of how many drags I took, I don't think it was much more than 3 sets of 10, how much liquid is absorbed/held in the wicking system. 2, when you look at your tank to see how much you have left, there is almost a U shape to the liquid level, with either side going up towards the wick. Where do you measure how much is left, the wick level, or below that?