Oh, I just learned that the neon tetras require lower temps! Sorry I like the new stocking plan. Just fyi, the congo tetra is not a South American tetra, but from Congo Africa. It's no big deal or anything, they come from the softwater river basin. They are one of the largest tetras commonly kept in aquaria. I had them in my 90g, one of my favorites in a large tank! A school of 20 would look stellar. I agree, I would love to see any progress pics!