A vape tank, as the name suggests is a tank, this tank is where your e-liquid is stored. The more you use or vape the more e-liquid you use up and will therefore need to top up your e-liquid within your tank. It is recommended to always keep your tank topped up to avoid issues such as a burnt-like taste when you vape. The tank also houses the coil, this is what causes the transformation from e-liquid to vapor. The coil is a replaceable part within the tank, have a look at our guide on coils to get the best out of your coils.