The Betta seems happy, and the shrimp seem alright: they're molting, and I've actually seen a few babies. I've got a pothos trailing into the tank, and I'm sure they're heavy feeders since they're houseplants, so I might move it.
I have been dosing weekly with Flourish, but I wasn't seeing much growth, so I recently ordered Easy Green. I've only used one it once, though, because it just came in last Saturday.