i only knew because each of the reo bottles holds 2 mls, and about 1 ml was gone in each :X I haVe 11 flavors among my tanks right now lol. so i get youi think i average like 4-8 mls a day.
So you are liking the reos now, cool!! And i vape about the same, 4/5 on most days but if its an evening with friends and adult beverages, it is more towards the 8/10 mls!!!!
