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I have one 30 gallon with dark sand and need to choose a substrate for my second 30g.

Any ideas?

I already have a lighter gravel.
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The best color is the one you like best! I have both blank sand and off-white sand tanks and like the looks of both (slight preference to the black sand, but only slight!)

But they make all sorts of different colors and grain sizes because someone out there likes each one of those choices the best :)
 
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