Promote the growth of freshwater plants in your tank with Aqueon Plant & Shrimp Aquarium Substrate. It is made from a clay-based material with a unique spherical shape that maintains its form over time and doesn’t breakdown into compressed soil. The shape of this substrate creates healthy root systems and allows for newly budding and mature plants to grow and flourish. Aqueon Plant & Shrimp Aquarium Substrate is ideal for use with freshwater shrimp, snails and tropical fish.