Just wondering, I was given this tiny plant in January this year, as an extra when I exchanged some cichlid fry for aquarium stuff. I was told it would grow very big but it has been growing very slowly. I will post pictures of when I got it and now. The oto in the second photo will give an idea of scale. Most of my plants are growing very quickly. I do not use C02. The substrate is mainly river sand but with some aquasoil as well. I have used various different liquid fertilisers depending on what I can get, but at the moment just using potassium. Do they always grow this slowly?