Here is my low-tech planted shrimp tank. It is 8gal I think, may only be 6gal... can't remember lol.
It is the tank I probably see the most since it sits right on my desk, It has a massive 3 species of plants in there.
Currently it just houses a ton of Neocardiena spI for shrimp.
No ferts, 16W, internal filter with built in heater.
Just boring java moss in there. I was going to use some of my Tiawianise Moss but it grows so slow under low light. The thick layer of duckweed keeps it very dark, but the shrimp love having that extra cover.