- Aquarium substrate is rich in organic elements and nutrients that can prompt the growth of aquarium water plants The aquarium soil, manufactured into particle shape, has high stability, not easy to decompose and will not make the water muddy The aquarium mud composed of granules of size and density profits to the development of healthy plant root systems These granules have a natural irregular shape that produces a natural look simple to use, no need to wash the aqua soil before use; Suitable for planted aquarium Made in China