Thanks Guys. Yeah I knew that was a little low on gallons, but I also knew it was a simple mistake. I was able to cancel the bentonite order. No big deal. The guy told me to call him back when I am ready. I must admit though - I am tired of thinking and planning. I want to get to "DOING"! I think I'll dig a test hole, till in the bentonite, and see how it does. If the test hole does well, I think I'll go with the bentonite. As far as a more "Natural" pond, this idea appeals to me more. The whole thing is - is that they both will cost about the same ($800 - $1000) and as we all know, If your careful with the liner, it's not going to leak, but the bentonite I'm not too sure about, only because I don't have any experience with it. It doesn't seem all that difficult though. Just need to get past the indecision process. And by all means, please add any advice or comments with your experiences! Cary - that pond looks great BTW!