Generally - the deeper we place the diffuser the more time it takes for the bubbles to reach the surface. As the bubbles rise their influecnce of spread becomes wider, greater and stronger. The big variable with this comes in the design of the DIFFUSER. There are numerous designs for diffusers. Few have actually been tested for efficiency, i.e. amount of water movement per cfm of air. One can say anything about how well their design works (highly subjective), but has it been really been tested and proven how it performs?
Another concern is how rapidly will the diffuser pores become clogged and how east is it to clean a clogged diffuser. Diffuser clogging is a whole separate topic and is influenced mostly by water quality and the organisms and silt load in the pond/lake.
Last edited by Bill Cody; 01/07/17 01:37 PM.
