No you shouldn't use it. I emailed the company a few months ago and they said it was not free of minerals and salts. You could get some silica sand though. Silica sand is actually another name for quartz sand. You can find silica sand at many pool supply stores. Usually they call it filter sand. I think it was about $6 for a 50 pound bag at a store near me.Originally Posted by [b
-buckeye



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