Do you have a pressure gauge on the airline? If so, you can check to see if the windmill is actually pumping air into the pond when the wind is blowing. If not, that would be the first thing to check - is the windmill operating properly? I have to rebuild a Koenders for a client when I get back from the Pond Boss Conference - it stopped pumping air after 4 years. Unfortunately to do that I have to get to the top of the windmill............

www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).