Hygrophila Serpyllum
This is an easy faster grower & compact growth habit under good light and CO2 as well as an ample supply of nutrients. With the right environment, the plant will form a carpet in your aquarium & under lower lights, it tends to grow a bit high. A rich substrate is beneficial; micronutrient fertilization, especially Iron should be applied regularly for healthy growth. Emersed culture is also possible in wet, rich soil under good light.