I tore apart my tank today to re-aquascape and decided to replace the sand bed while I was at it. I'm using some of the old sand to seed the new sandbed, but I have about 2.5 gallons left that I'm not using. It's dirty but full of critters and great for seeding a new sandbed with. It's aragonite, mostly 1-2mm. I sifted it through a colander to make sure I wasn't throwing any snails out, so big chunks, rocks, etc have been removed. Pick up in Richmond or at the next bar meeting. I'll throw it out in a couple days if nobody claims it.