Neon Tetra with Ricia 4 gallon aquarium

Fauna : Cabomba, Java Moss on drift wood, Hornwort, Bacopa, Ricia.
Fish : 8 Neon Tetra + 2 Cherry Shrimps[added later for in-house cleaning]

[@saswatghosh]

Do you need to inject CO2 by any means?

[@arryshome]

I had injected DIY CO2 and the Oxygen bubbles bloomed on the fauna. I used water, sugar/jaggery and dry yeast to make CO2.