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.