So quick update for you, I added one more of the tetras, and I don’t know if it’s because it’s a female (the rest look like males), or just the extra comfort, but they are shoaling so much better. They were active before, but just with that one new pal they are way more a social grouping. I never would have guessed just one more fish would make such a huge difference.Keep us posted, those tetras are on our list of possible stocking options, so interested how your tank works out in the long term!