I have 3 Cory species. Peppered, emerald, and pygmy. Thanks for the comments on the parva. It's really grown above and beyond from what I expected from the few tiny clumps I started off with.
Also, thanks for the tip on the sand. I try to stir up some sand evry time I do a water change. No signs of bga yet. Bba on he other hand has been a bit of a problem