Sand or gravel on the bottom of the aquarium, together with water plants and decorations, create a beautiful overall look. The aquarium flooring also fulfils the special requirements of the ecosystem: it supports the plants, serves as a habitat for many useful bacteria and contributes to the well-being of the fish. The animals keep busy with the aquatic background by rummaging through it to look for food. It serves their orientation and as camouflage for them and lowers their stress level whilst imitating a safe environment. The floor also fulfils a filter function in the natural habitat and ensures that the bacteria that are important for the quality of the water can form.