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Replacing liner?
After 12 years it is time to replace my liner. I have a few questions
before I do so I don't screw this up. When I first built the pond I didn't make the bottom flat. ) It is 12 foot wide by 20 foot long by 3 foot deep). This I later found to be a mistake. I corrected this by adding about 10 inches of gravel to level it out. This has worked OK although it is not easy to keep clean. What I want to do is fix this problem at the same time I replace the liner. I want to install the new liner over the old one and use the 10 inches of gravel to level things up. This brings me to a few questions. The original liner was a rubber material about 20ml thick. It has a small leak somewhere well below the waterline. Is there a preferred material I should use for a replacement? If I leave the old liner in, should I make holes in the old liner to prevent the new one from floating or just lay it on top? The pond is elevated a bit above ground level and the soil is thick clay. Should I use adhesive around the top to prevent water from getting between the liners? If so, what type? Silicone? I have some rocks that have always had a tendency to fall in. Using expanding foam may be a great solution for this. If this breaks down over the years are there issues with toxins? Would you recommend adding a thin layer of gravel to the top of the liner? I kind of like the look of river pebbles and it might help keep water from getting under the liner. Any other pointers would be appreciated. I have about 20 (6in) goldfish and a bunch of bluegill that I plan to move into trash cans during the process. I will keep the temperature as stable as possible ad well aerated since the weather is supposed to be hot. |
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