When it comes to the size, a bubbler fairs somewhere in between a dry pipe and a bong. The same can be said about the strength of the hit. However, what truly differentiates a bubbler from a bong is the fact that in addition to a mouthpiece hole and a bowl, a bubbler also has a carb hole similar to that of a dry pipe. Whether it is about appearance or function, a bubbler is quaite similar to a pipe.