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Originally Posted by Zeb Many thanks.
I've heard its poisonous as a neighbour a couple doors down built a pond and instead of lining it he used sand and cement. Once finished he populated it with water and fish and they all died. Not quite sure how he came to the conclusion that it was the cement that did it. |
I am not sure either, but I can tell you that many many ponds are built using concrete (ballast cement mix)...................Jon