The store adds the nicotine. I started at 8 and was extremely happy. I have a Kangertech kbox mini with 0.5 coils. 2 weeks ago I got the 3 instead of 8. I was hitting the 3 a lot and didn't feel like I was getting enough nicotine so I got the 8. The last week has been hard. I have 2 bottles of 8. I've even thought about buying 2 bottles of 3% and mixing them to drop nicotine level?
You can do that. I keep a bottle of zero around, just for that purpose. Sometimes, I just vape straight zero.
I made major changes in my Nic levels just this week. But being the wuss I am. I made sure I had a couple of bottles at my old levels, just in case I need the kick.
Quick question though. Your comment
"The store adds the nicotine"
Do you mean they add it there, at the time of purchase? Or they sell pre-packaged brands from the shelf?
I just asking, because unless I saw the process. I would question the actual Nic levels in every bottle.