The Planted Tank Forum - View Single Post - Substrate question regarding marsilea minuta
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post #2 of (permalink) Old 08-31-2012, 10:24 PM
Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 10,520
Play sand is not usually a good choice in an aquarium, use pool filter sand or blasting grit, or PebbleTech, a quartz swimming pool product. All these are uniform particle sizes for better water movement through the cap, yet fine enough that a carpet should grow through it.
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