Peppermint Betta Tank ( Attack of Cyanobacteria) No filter, No CO2, NO ferts Nano Tank

Kartoffel is a wild betta species called Mahachai betta. The lettuce started out strong, then ended up withering away. I can only guess that its probably b, c of from lack of nutrients. I added regular duckweed, and it also would not grow. I think adding the pearl grass made other plants not grow very well. It probably sucks up too much nutrients from the tank. The bumblebee nerite didnt make it through the cyano phase of this tank. It wasnt the slime stain removers fault. I was going to add anoth