Is a specially formulated soil for freshwater aquariums. It consists of clay and natural substances containing trace elements and added ferrous mineral, in the form of sulphate. FONDOVIVO is used to encourage vigorous growth of the plants that find healthy nutrition in it. Its particular porosity helps the roots establish quickly and easily. FONDOVIVO does not make the water cloudy, and also helps the oxygenation of the bottom. FONDOVIVO should not be washed, but must be used as it is, so as not to remove the active substances.