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- Jul 1, 2018
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I am building pond in my backyard that’s about 3000 gallons approximately and because of space I went with straight walls out of 6x6 treated wood. I covered with a good liner for our area and now am looking to finish the top of the wall with flagstone. It seems very hard to make it look nice with the waterfall foam because of the expansion and I would have to trim excess on every seam. Any ideas to create a nice seal with anything else?