In the aquarium, all living things should feel as comfortable as possible, because here you spend their whole life. The selection of the right soil base plays a major role in this process, and this usually begins the redesign of an aquarium. This should be carefully selected and take into account more aspects than just the personal look, but also the requirements of the well-groomed plants and animals. In addition, the substrate as a biological filter represents the largest area for beneficial microorganisms. The NatureHolic Nanokies white is particularly suitable for this. It is hardness-free, water-neutral and has a small and rounded grain size of 1.3-2 mm. This makes it ideal for bottom fish with sensitive barbels, as well as invertebrates such as shells and dwarf shrimps, but also others. Before first use, the Nanokies should be thoroughly washed with cold water to remove transport-related abrasion. It is recommended to use a nutrient substrate under the gravel. Contents: 1 x NatureHolic nano gravel, white, 2 kg