It can be soaked in water and grow in clear water directly, but the nutrient elements in the water can't meet its needs, so the plant won't grow well. If you want to make hydroponic plants grow strong, you should place a part of the culture medium at the bottom of the hydroponic container.
The substrate can be granular deer marsh soil, red jade soil, fairy soil or aquatic grass mud. It is no problem to put it at the base of water body to fix the roots of plants. If it is not convenient to get these materials, ordinary gravel, small pebbles, glass balls, stones and other materials can also be used to fix the roots of plants.