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Old 07-24-2013, 05:37 PM   #7
wicca27
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i buy the pool filter sand yes it is silica sand but the main reason for the pool filter sand is the grain size. it does not compact like play sand. you can cap the soil with gravel but the problem i have had with doing it that way is more of the soil underneath tends to float up you would have to use a thicker layer of gravel than you would sand
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