If you want to grow Andrographis paniculata in water, you need to prepare a transparent and clean hydroponic container and pour some water into it. Then prepare a well-growing Andrographis paniculata seedling, place it in a hydroponic container, and use a planting basket to fix it so that its root system is below the water surface and its leaves are above the water surface. After that, maintain a warm environment around 20°C, change the water regularly, apply nutrient solution, and maintain slowly.