If you had to do it over again...

[MitchM]

It does fine, but I wouldn't be planting any Willows if you want to maintain the integrity of the Bentonite seal.

At the depth my pond is, we have a heavy clay content to the soil.
I think the occasional perforation of the benonite shouldn't be a problem.

 

[Meyer Jordan]

Would you need Bentonite? It is usually applied when the clay content is not high enough.

 

[MitchM]

I'm not sure. My water supply is limited.
At any rate, it's looking like this is going to be a dry year so I won't be making any changes until I'm certain of more precipitation. All fish and invertebrates seem healthy and well fed for now.