Byron, you've been very helpful to me here. I went to Home Depot today to get the quikrete play sand but they don't carry it. I looked around and Lowe's which, is a 45 min drive one way for me, dose. The local fish store here has aquarium sand, will that be just as good? I know it's a quit a bit more money, but I'll save that much on the gas I would use getting the play sand.
Depends what the "sand" is. It might be crushed coral or similar for marine tanks, you would not want that as it will mess with the water chemistry. Byron.