Is it 10 cfm AT 10 psi, or 10 psi maximum? If it is 10 psi maximum, then an important question is what cfm does it put out at the 10 psi. A performance curve chart would be great if you could find it.
10 psi will cover depths up to 20' or so. Thing of it is, 10 cfm at 10 psi is a bunch. Enough for several diffusers at a depth of 20'. But if cfm drops off quite a bit at depth (back pressure), it might not have 10 cfm at depth.
What kind of pump is it? Rotary vane? Kind of what it looks like by the picture.
Ideally you want to know the max depth in the pond you will use the pump, then look at a performance curve and see what the cfm is at that depth (pond depth in feet times .5 = approx psi the pump will be looking at). Once you know that you can look at diffuser specs and see what type and how many diffusers it will support.
3/4 hp run continuously will definitely cause a rise in your electric bill.
Last edited by snrub; 01/27/15 05:38 PM.
