Excellent for Plant growth and shrimps; 5kg. Absolute Aqua Substrate is the only natural. Aquarium bed with the. complete nutrients for aquatic plants and live fish. Absolute Aqua Substrate is ideal for small, Nano or the large aquatic aquariums to create natural Aquascaping aquariums. The great benefits of using Absolute Aqua substrate are: Ideal for plant growth. Has the complete nutrients to grow aquatic plants. Excellent for shrimp keeping. Crystal clear aquarium due to its absorptive properties. Contains all the natural nutrients to feed aquatic plants. Provides the natural pH level for the aquatic aquariums. Does not break down easily. Different size granules for the natural look. Excellent for carpeting plants. An excellent aquarium bed for both fish and aquatic plants. Can be used in conjunction with other medicine.