An electromagnetic biostimulation apparatus and method includes a container with an outer wall, a bottom, and a top such that an open interior space is formed. Several biotubes are located within the container and an energy transmission device is provided where the energy transmission device is directed at less than all of the several biotubes. A laser beam and optical density reader device combination is provided where the optical density reader device obtains data from the laser beam related to each of the several biotubes.