Posted: Mon Nov 21, 2005 6:51 pm
If the gravel is small enough to eat, at some point your turt may be tempted to try it (it's also thought that eating gravel/pebbles is a sign that a turtle is looking for more calcium in the diet as well). If he does, there's the chance of him not being able to expel it and get impacted, which would require medical care. I think it's better to be safe than sorry. (Gravel also makes cleaning harder, and can contribute to an unpleasant smell if not cleaned well and debris remains in it.)
Many people use smooth river rocks larger than the turtle's head in the tank. He won't be able to eat them, and they'll add to the look of the tank. You don't need a lot, just enough for him to push around.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-