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Hessian sacks with a sand/cement filling to shore up side of pond.

Discussion in 'General DIY' started by BML, 1 Feb 2021.

  1. BML

    BML

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    I want to shore up the side of a garden pond using the hessian sacks one see’s built alongside a riverside but I have no idea what the sand/cement mix is and whether one can just place them in the water or do they only work in a dry place and left to weather.
     
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  3. freddiemercurystwin

    freddiemercurystwin

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    Think they're just a dry mix concrete, the ones you see on a riverbank can sometimes contain a dissoluble liner that dissolves as soon as it gets wet but that's more to do with the practicalities of them being stored/transported beforehand etc so I would think a DIY approach would work, concrete sets under water.
     
  4. lostinthelight

    lostinthelight

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    If you use concrete in a fish pond that in contact with , it can upset the PH of water for some time if thats going to be an issue for you
     
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