: Sells PRO Sandbags and related weighted gear that can be filled with iron sand.
: High-performance clay-based foundry sand produced in the USA. Available at eBay - vastovariety for approximately for bulk bags. PMC Supplies : Offers Sand Casting Sets where to buy iron sand
: Specific types of black iron sand are sold as substrate for plants or fish. You can find these on Amazon or at local aquarium specialty shops. : Sells PRO Sandbags and related weighted gear