I'm researching aerator pumps for my pond. When looking at the specs, in most cases the flow is rated in CFMs instead of PSI.

If I understand how this works, if I'm going to run the diffuser from a depth of 12 feet, then I need a pump capable of pushing 6 PSI to counteract the pressure of 1/2# per foot of drop.

How do I convert the CFM into PSI so I know whether the pump is capable of that depth? Or easier still, is there a certain CFM rating I should be concentrating on as a minimum flow rate?

I intend to elevate the diffuser off the bottom by about 2 feet, which will put it at around 10, so if the pump is rated for 12 feet, it should be more efficient and last longer between rebuilds.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!