I have been vaping for a few months now, but never really figured out what kind of juices mess up plastic tanks. I use a custom tank called an "Imperial" that uses boge short cartos and have been using light colored juices (i.e. Butter Rum and Mountain Dew Voltage) and a friend of mine gave me a couple bottles of some rather dark colored juices that he doesn't like. The flavors are Cherry Cola, Marshmallow, and Irish Cream/Vanilla blend which are all a pretty dark brown. I want to know if any of these "new" juices could be potentially harmful to any of my equipment.

