Hello,
I am an aquarium professional serching for a particular sand/silt to use in a public aquarium display. I visited Alaska a few years ago and collected some very fine glacial sand/silt, which I believe was granite in origin. The color and size resembles gun power with a black/grey tone. Is this something that your company could provide? I'd be looking for information on approximate size, color, and pricing, perhaps an picture if possible.
Thanks,
Nate Jaros, Assistant Curator, Aquarium of the Pacific, Long Beach, CA