KFin

Reading that article it looks like production is slowing to a stop over the next 3 years. I did see that Kleen Blast in Tacoma has some (I'm looking for it too). https://products.kleenblast.com/viewitems/specialty-abrasives-blast-media/cemex-lapis-lustre-sand

Does anyone know what substrate brand and color @Cory used when he recently revamped his tanks in the fish room? My son and I really liked it but don't think it's mentioned in the video.