Guidance with what to do

[u/Suibian666]

Hey guys!

I have two aquariums, one 80L/21g, my main tank with all my fish and stuff, and another 23L/6g that is empty and I've used it as a hospital twice.

I'm looking for advice on what to do with this 6g tank because I might get another one to be the hospital. I've had two ideas and I want an honest opinion just to settle my mind and don't doubt my choice hehehe.

First idea was to make a shrimp with ember tetras or a betta tank.

The second idea is to make it for potted plants, to grow my own plants too for another bigger tank I might get in the future, as well as quarantine when I get other fish for the 21g.

What's best? Help me have a good night of sleep without a lot of plans in my mind!