Members here have uesd bentonite and other sealing products and they have worked - for a while. I second draining and fixing it right. It'd be even worse if your pond starts to leak again in 2 years after fixing it with bentonite.

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).