So, I've started digging my pond out. I was hoping to 'puddle' the clay-ish ground, but after doing some tests I think it's not quite clay-ey enough.
So I may use a liner, but really hate the sight of black plastic under the edging. And I think I need to leave a good ingress/egress route at the edges for the (fingers crossed) frogs, newts, etc, which I guess means edging it with overhanging slabs won't really work.
Best, most eco-friendly solution? Any suggestions?
Also, can I really not use tap water to fill it?!