Okay - it is a small piston pump. You are not getting much air from it. My guess is 0.7-1 cfm at best and possibly 1/8 hp. Benefit to the piston style is higher pressure, thus your 30psi readings. More air volume (CFM) will result in more water movement and a larger opening in the ice. The pump will take a long time to create a turnover in the pond depending on several factors. Others on the forum may be able to locate more specifications for the pump. Next summer try to replace the airline with 1/2" black polyethylene irrigation pipe -abt $10/100ft - low cost; Lowe's, Home Depot.
Last edited by Bill Cody; 12/29/09 03:00 PM.
