I was wondering if its possible to order GFO strait from a chemical company. GFO is basically rust. If we knew exactly the chemical composition of aquarium grade GFO I wonder if we could order it from a chemical company in bulk and save on the branding. This company here sells all kinds of stuff but I'm not sure which of their products is comparable to aquarium GFO. If someone knew maybe we could all pitch in for a bulk order. The company is right here in San Antonio.