Hey everybody! I just started vaping about 3 days ago and I have a question... I have the IStick TC40W by ELeaf, and the tank that I'm using is the IJust 2 Atomizer. I have two juice flavors, one that I choose myself, and the other was just given to me. The one that I choose was the Strawberry Juice Roll Upz, and the one that was given to me is Sin City by GQ. I am currently using the Roll Upz juice and the tank is half way empty. So now I'm starting to get curious about the Sin City juice. And my question for you is how do I switch over to the Sin City juice to try it out? Do I just fill the tank with the Sin City juice when the juice that I'm currently using is gone, or do I need to buy a second atomizer? What are the options that I have? Thank you very much for taking the time to read my question.