This plant originates from South America and stems become 25-60 cm long with 10 cm long leaves. Under water Hygrophila costata has relatively narrow leaves which are grouped close together. Plants sold in the shops are normally cultivated above water, and have rounder leaves with larger gaps between them.
Hygrophila costata was called Hygrophila corymbosa 'Angustifolia' until recently.

Plant info
Type: Stem
Origin: South America
Country or continent where a plant is the most common. Cultivars arise or are bred in cultivation.
Growth rate: High
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: Medium
The average or medium light demand of an aquarium plant is 0,5 W/L.
CO2 : Low
A medium need in CO2 is 6-14 mg/L. A high demand in CO2 is approx. 15-25 mg/L.