I have this issue posed to the technical team - will relate info soon. I know the polymer is designed to be used to in sand, gravel, shale, rock, etc. - however it's the hydraulic pressure from EITHER side in a water table pond that has me guessing a bit. If water table pressure exceeds head pressure form pond, will the seal hold? I'll relate research ASAP - this is good for me to learn.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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