Dude/Dudette, I have been using sand for over half a year with no problems. I have done tons of research on it and so have others. I can assure you it is safe, and when eaten, passes easily because the grains are so small.
You can't listen to crap like Yahoo answers because the average person on there is like 13 yrs old and has no idea what they are talking about. Other people say it isn't okay because they have no experience with it and are just listening to what they have been told.
Use sand if you want to. Don't if you don't. Bare bottom and river rocks work just as well. If you're uncomfortable, don't use it. Nothing is permanent, you can change it if you decide too. Go with river rock now, sand in a few months, or vice versa.
If sand wasn't okay, my turtle would have been dead long ago.
It's all your decision.
