I'm new to vaping and just got my OMMP card so I have a lot of questions and thanks to the internet I can answer most. But right now I'm confused about Ejuice tanks. What do you fill them fill? Are they only for E-cig or could you fill them with a cannabis tincture? But that doesn't seem right because they're usually made with alcohol. I wouldn't want to put alcohol in a closed container and spark it.