If I want to tumble my tanks would this be a suitable media? I can get Aluminum Oxide but this looks like it would work and I can get it at half the price:
https://www.anti-hydro.com/resources/downloads/tech-bulletins/TB-E-1-1.pdf
https://www.anti-hydro.com/resources/downloads/tech-bulletins/TB-E-1-1.pdf