I have Halo g6 and got several different juices......I filled the first cartomizer and tried it, it was good then I decided I wanted to try all the flavors I got so I filled all my cartomizers with different liquids. My question now is I have found 2 flavors that are my favorite and I use everyday but the others I filled how long will they be okay. Does the liquid evaporate after awhile being in the cartomizer or will they be good for along time?? Also how do I know when I should refill my cartomizers, I don't want to overfill them because I have read that that is bad for them but I also don't want to run them dry either and ruin my cartomizers. Thanks for any advice!!