I was curious so I went looking to see what the chi was. Cool little tank.
Just don't stock it like the guy in a video that I watched... I laughed out loud at a couple of places where this guy thinks he know what makes the fish happy... warm water for goldfish apparently makes them happy.
He has 3 fancy goldfish and a blue ram in a 5 gallon tank, the chi tank... and the fish "seem pretty happy".
Anyway,like Frankie said, low light plants should do decently but if you have sunlight each day, you might get away with higher light plants.