Growth performance of five Lactobacillus spp. (abbreviated as Lb.) in the semi-solid fermentation (SSF) medium, with three different water contents, in which the ratio of flours to water was as follows: 1:1.0, 1:1.5, and 1:2.0. ŁOCK is a designation of strains obtained from the Lodz Collection of Pure Cultures (Institute of Fermentation Technology and Microbiology, Lodz University of Technology; Lodz, Poland). Moreover, different lowercase letters (a–c) stands for significantly various mean values of bacterial growth per one strain according to performed one-way ANOVA with post hoc Tukey’s test (p > 0.05).