Hygrophila polysperma ‘Rosanervig’ is normally an undemanding plant.
It may suddenly develop shoots that are entirely green. Remove these to keep the distinctive pink, marbled leaves. 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 pale 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.
Country or continent where a plant is the most common. Cultivars arise or are bred in cultivation.
Growth rate: Medium
Growth rate of the plant compared to other aquatic plants.
Height: 20 – 30+
Average height (cm) of the plant after two months in the tank.
Light demand: Low
The average or medium light demand of an aquarium plant is 0,5 W/L.
CO2 : Medium
A medium need in CO2 is 6-14 mg/L. A high demand in CO2 is approx. 15-25 mg/L.