Proper drainage is essential for the health and maintenance of your built-in indoor aquatic plant garden. Ensure that the garden is equipped with a reliable drainage system to prevent waterlogging and stagnant water. This can be achieved by incorporating a layer of gravel or pebbles at the bottom of the garden, which allows excess water to drain away. Additionally, consider installing a drain or a small pump to remove any accumulated water. Adequate drainage not only prevents water-related issues but also helps maintain the overall health and vitality of the aquatic plants and the koi fish.
