Crystal Clear Aquatics AAD00248 Pondseal Liquid Pond Liner, 1-Quart

I bought this to seal a waterfall that I had rebuilt. It was applied over concrete and had I used pond sealing foam to fill in some of the cracks. It goes on dark brown, but dries black.

I tried foam and bristle brushes and it definitely goes on easier with a standard paintbrush; especially if it's going on a rough surface.

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