I am saying that deep sand beds are kind of an old fad that most people have gotten away from. They are not as useful as they were once thought to be. Especially in a 10g, you just can't have a successful DSB long term. Just use enough sand to coat the bottom so it looks nice. Your rock will provide plenty of biological filtration, no need to get lots of sand in there that is merely going to trap waste in the long run.
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Rich
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