The Planted Tank Forum - View Single Post - Help! What substrate do I need?
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Old 06-23-2013, 01:17 PM   #9
somewhatshocked
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No, you can't cap it without the sand settling to the bottom.

There's really no reason to cap Aquasoil. It's meant to be used as a stand-alone substrate (optional additives notwithstanding).

If you want to cap something with sand, just use potting soil.
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