Ok so they have both the medium and fine blasting sand.
I can see how the 20/40 looks like the petco size but actually think I would like it a bit smaller.
Does the finer one, 30/60 also work well? I guess the only concern would be if its so light it kicks up all the time. I am also planting the tank but have stems and DHG in the fine caribsea sand that does well.