Planted Tank Enthusiast
Join Date: Oct 2002
Location: Minneapolis, MN
Sand can be used in planted tanks, but a bottom layer of the substrate must be enrinched with nutrients, such as laterite or something, such as plant spikes since sand is basically crushed gravel. If you have sand, it will actually weight your plants down much better than regular gravel.
Cleaning sand can be much more difficult, just hold the gravel cleaner above the sand, but don't clean it like gravel cause you will suck up the gravel! Hope this helps!