2. Crown grass: gorgeous large aquatic plants, suitable for planting in large aquariums, suitable for growing in weakly acidic and neutral water, and like temperature and light;
3, mini crown: small size, better as foreground grass, can not be planted in coarse sand environment, need to supplement iron fertilizer at any time;
4. Thin leaf crown: it is a small swamp plant, which likes strong light;
5. Wave crest: It grows in the water area with slow water flow and low water temperature, and propagates by using the lateral buds growing on the rhizome.