Aquatic plants perform a number of important functions: they do not allow algae to multiply, absorb nitrogenous compounds, and also saturate the tank with oxygen. Plants are the "lungs" of any artificial reservoir, shelter, and protection for its inhabitants, as well as an excellent decoration that can diversify the landscape and add bright colors to it. Ceratophyllum is one of my most favorites, amongst Cladophora spherical, Indian Fern, and many other
aquarium plants since, firstly, it’s not fancy but quite affordable at the same time, and secondly, it has good filtering properties. Hornwort purifies water from nitrogenous compounds, high concentrations of which can poison fish