1, Gracilaria lemaneiformis: aquatic herb. The leaves are long and narrow, and the length varies with the depth of water level, and the leaves are green and translucent. Strong adaptability to water quality, like weak alkaline water quality, do not like high temperature, cold resistance, like light;

2. Crown grass: the petiole is stout, the leaves are wide and long, and the plant height is over 60 cm. This is a large aquatic plant. Native to Brazil, similar to the terrestrial Brazilian wood, it should be planted in a large aquarium. Suitable for growth in weak acid and neutral water, like warm and light, the water temperature is 26-28 degrees Celsius.

3, mini crown: native to Brazil. The needle shape is 5 to 15 cm long and 0.5 to 1 cm wide to adapt to different lighting conditions. Can't be planted in coarse sand environment. Iron fertilizer needs to be replenished at any time, and the water temperature is 22 to 27 degrees Celsius.