That's very good, but don't forget about vacuuming the substrate and getting the detritus out from the plants. If that is all done well enough, then they might have come in from plants.
Either way, they are a typical part of an ecosystem. They eat detritus and even shrimp shells once they get bigger.
Last edited by Ddrizzle; 04-01-2019 at 05:34 AM.