Bio-Dynamics is the expert in designing and manufacturing cast-in-place, round, monolithic reinforced concrete tanks . We build tanks (barrels or pits) with diameters ranging from 4.5 meters to 50 meters and heights up to 30 meters. With or without a roof, underground or above ground. Bio-Dynamics is a family business that has developed over the past 30 years into the specialist in the construction of concrete tanks , with in-depth knowledge of water purification and environmental technology .