It would be better to use a substrate that allows the root system to
propagate. Sand, may look nice but packs too tightly for proper respiration
around roots and has no mineral value since it is mostly inert silica. I
use potting soil as a substrate capped with Schultz's fullers earth
granules. The latter stays on top of the soil and if you are inclined to
occasionally vacuum the bottom, the fullers earth is heavy enough that the
python tube does not pick it up.
"Nsty N8" wrote in message
...
Subject: Sand as substrate
From: "François Arsenault"
Date: 12/7/2003 10:29 PM Central Standard Time
Message-id:

Hello everyone,

Is regular sand, say of the typical sandbox type, an appropriate
substrate
for a planted aquarium? At first I thought it would do just fine (which
it
may be, for all I know). It's cheap, and I figured it might make it
easier
to plant the plants than regular gravel.

However, I'm now wondering if such a substrate might be too tightly
packed
for the roots. I mean, could it prevent enough nutrients from reaching
them?
Is there a chance the roots or buried stems might rot because of it?

Is planting easier in sand than in gravel? The smaller grains might
"mold"
the lower stems and roots better, holding the plants into place better
than
gravel. But I have no experience with this, and it's entirely possible
that
it's actually harder with sand.

Also, what happens when you use a siphon in sand? Is it light enough to
get
sucked up along with the water?

If sand is a good substrate, are there types that are unsafe and should
be
avoided? I assume the nature of the sand is a factor, like sand that
releases heavy metals or other toxic substances.

Thank you for your help.

Francois


You might want to try pool filter sand. It has a large grain and it's
white.
I have a tank that's been up for 31/2 years that is a playsand/kitty liter
mixture.

Is planting easier in sand than in gravel? The smaller grains might
"mold"
the lower stems and roots better, holding the plants into place better
than
gravel.

It's easier to plant in sand. But gravel will hold the (new) plant down
better.