Before revision: Types Diffusers are generally referred to as either: Fine Bubble/Fine Pore Coarse Bubble Other diffused aeration devices include: jet aerators, aspirators, and U URL tubes.U.S.
After revision: Types Diffusers are generally referred to as either: Fine Bubble/Fine Pore Coarse Bubble Other diffused aeration devices include: jet aerators, aspirators, and U tubes.U.S.