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It made a massive difference to my pier. It was especially beneficial to me as I only have 4 or 5mm thick steel available. By filling it with sand the difference was astounding.
I will be re-fitting my system in the new rental premises I am moving to and will video the results. Still have a heavy block of concrete to move.
EDIT: I only used sand as I knew that it was mean't to move one day so using liquids would have made it difficult to drain.
Last edited by mswhin63; 25-05-2015 at 09:06 AM.
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