Got it. Got 3 bags from lowes's pico rivera. I'm going to give it a nice rinse tomorrow afternoon and pour it in the aro tank. So far so good.I'll update later with a pic.
Good luck. I had considered both play sand and PFS because they were cheap, but I ultimately went with 30lbs of Flourite instead for size and color of substrate for 40 bucks + tax. PS was a good color and cheap, but it was way too fine. PFS was coarse enough (20 grit), but I didn't like the color (gray-ish mix). I also had considered blasting sand they sell at HD, but that was way too fine (30 grit; I'd want 20 or coarser), even though the color was perfect (light brown, beach sand color).
I ended up rinsing the Flourite about 2 hours, and it is settling pretty well in my 20g long tank after a day.