Natural Gravel Rio Xingu is a natural colourful gravel. The grain size of the stones varies between 2 - 22 mm and creates a particularly informal landscape appearance. It is ideally suited to imitate river landscapes, for example. Accents, small paths or entire landscapes can be designed with the colourful, original gravel - there are no limits to creativity. Breathtaking designs can be realised with the 100 % natural gravel, which is modelled on the Rio Xingu habitat. The 2 - 22 mm Natural Gravel Rio Xingu is both light- and CO2-resistant and suitable for all aquarium inhabitants.