I have a local guy that is willing to give me a deal on a bunch of Gast DOA-V192-AA pumps he has as a package deal. It is the same pump as the newer DOA-V722-AA.

It specs say max 1.10 cfm @ 50hz and 1.90 cfm @ 60hz and its a 60 psi max. But I did find some other specs that said the cfm ranges from 0-10 cfm. I plan on calling Gast tomorrow to get the true specs.

Would this pump work with the amount of cfm and psi it puts out for a diffuser in a pond? Also what kind of depth would it be good to and how many diffusers or what size could one of these pumps run?

Thanks for any input