After reading so many posts on PFS I decided to pick up a 50# bag today from a local pool supply store (Performance Pools). I called around and all of the stores carried only what they described as a red sand. Home Depot had nothing, neither did Wal-Mart. The type/color of sand I'm sure is dependent on where you live, in our case it came from Eau Claire, WI (Red Flint Sand and Gravel, LLC).
One thing I didn't notice was the warning on the bag that read "breathing of dust containing greater than 1% free silica may cause... cancer. Follow all OSHA and MSHA Safety and Health standards for crystalline silica (quartz) when handling or opening this container. Wear proper respiratory protection when using this product."
Ok, one bag, prolonged exposure, sure I'm fine.

Still if there's a next time, I'll wear a mask, or find another source of PFS without the warning. It's very confusing. What the heck is "1% free silica?" And why didn't either of the salespeople mention wearing a protective mask?
Ok, on to the sand. We rinsed it many times and poured maybe 30 pounds of it into a 20 gallon tank and filled it up with water. Six hours later the tank is as clear as any other I've set up using gravel or sand (Eco-complete we're talking days to clear). The color of the sand is disappointing, almost identical to play sand except with a little more of a reddish tinge. It just doesn't look appealing in our humble opinions. If we were keeping fish native to WI and MN then it would look more natural. Africans, no way. Interesting $8 experiment tho, we may even end up keeping it in the tank and put in some shellies.
One store, Watson's, which is a bit north of where I live has the white sand - may have to try them next.