Hygrophila polysperma 'Rosanervig' is normally an undemanding plant. But if you want deep-pink leaves you must provide intensive light. Stems becomes 20-40 cm tall and 5-8 cm wide. The distinctive colouring of the light leaf ribs is probably caused by a virus which prevents chlorophyll from being produced in the cells around the leaf ribs, making them white. However, this virus does not affect other plants in the aquarium A.K.A Tropic Sunsent Plant info Type : Stem Growth rate : Medium Height : 15 - 30cm Light demand : Low CO2 : Medium Package Size: 2cmX2cm Hydroponic Pot Stem: 10 Emersed