The Planted Tank Forum - View Single Post - Sand capped with fluorite (plant mix)?
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Old 12-24-2012, 03:30 AM   #3
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Post the best picture of your sand substrate and flourite next to each other.

I would use thin (<0.5in) substrate if sand is finer than flourite. Otherwise 1:1: proportion would be OK, to avoid anaerobic issues and gravel siphoning it up accidentally.
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