leopard, i got the sand from petsmart, but i am pretty sure petco carries it.
It is SUPER FINE and feels like flour when dry, beach sand when wet. Believe it or not, it barely clouded my water, there is a white and black version and i have the white version.
also, my ph is 7.8 with moderately hard water with high akalinity, do you think the cories should adapt? they are raised in the same water as mine at the lFS i am pretty sure....good luck!
I'll look into that sand. I think the cories should be fine in that water. They will be adapted the the ph by now and my ph is around 7.6 with super hard water (180ppm) and they were fine in there. Be sure you get at least 3 though.