Abstract: A culturing fluid of defined bacterial consortia is placed within a cultivation apparatus to generate growths of either a bioconcretious or biocolloidal form within, or attached to surfaces exposed to, the culturing fluid. Such growths involve the interactive activities between all of the bacterial consortia to generate growths and economically attractive chemical daughter and end products within the fluid environment bounded by the cultivation apparatus. The cultivation apparatus allows the culturing fluid to flow along passageways that have alternating constricted and expanded zones in a manner that creates the growth of bioconcretious or biocolloidal structures within which the bacterial consortia interact to allow maintenance of these growth structures and stimulate the production of the desired chemical products of significance.