Modern aquaristics, especially in the fields of aquascaping and the cultivation of complex aquatic plants, is unthinkable without the use of specialized nutrient substrates known as Active Soil. Soil is not just a decorative substrate; it is a complex chemical-biological system that fundamentally changes the approach to setting up and maintaining a planted aquarium. Its development has enabled aquarists to grow demanding flora species that were previously considered extremely difficult or even impossible to cultivate in home aquariums.