Hey Nik, you can find an ...
Published by Karl-Uwe Schmitz, President at Aqua Equip Technologies LLC (AET LLC)
Hey Nik,
you can find an example of how to calculate the required air volume here: https://youtu.be/MyiOL1jWcQw
The amount of air per diffuser differs a lot by diffuser type but for standard disc diffusers its usually 1 to 2.5 SCFM per diffuser.