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black sand
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  1. Betta Fish Bowls, Habitats, and Accessories
    My LFS has black sand, but it's $15 for a bag and I just didn't want to drop that much on a 5.5 gallon's worth of sand. So I bought what they called "black beauty" obsidian sand. It was a lot cheaper. It's kind of shiny, and I rolled some between my fingers and it's not sharp like one would...
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