The aponix vertical barrel takes the defacto standard equipment to the next level enabling users to set up grow spaces not only in 2D but in a flexible vertical 3D way. Cultivation area is translated from flat surface to the surface of barrel like towers, of which the height is flexible adding more grow spaces with additional height. The concept abstracts the barrel down to basically one lego like shape being 1/6th of a ring segment of a barrel. Each of the parts provides adapters on its surface. 6 of these parts are assembled into a ring segment, and any number of ring segments are then stacked as high as there can be beneficial atmosphere created for the cultivation of a crop. Irrigation is done from the top.