Abstract: A diffuser is disclosed and claimed that can be used in multiple applications, which will sink and operate in the location where it is desired and has the ability to be maneuvered around obstacles. According to one aspect of the invention, a device for aeration of septic tanks is provided. In at least one example, the device comprises: a system of articulating gas-transporting joints; a plurality of porous sections; a bifurcating joint connecting said system of articulating joints to said porous sections; a plurality of weights; and a plate connected to said weights, said bifurcating joint, and said porous sections.