If the pond had a good clay lining, then the water shouldn't migrate thru it. It looks like capillary action in soil. I see that in my pond, but it's a groundwater pond dug in sand.


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).