A bioremediation system using inorganic oxide-reducing microbial consortia for the treatment of, inter alia coal mine and coal yard runoff uses a containment vessel for contaminated water and a second, floating phase for nutrients. The display box has identically opposed faces that include numeric light emitting diode displays for completed game scores and LED indicators for completed sets. Additionally, the LPD-SiO2 does not include the growth seams that CVD silicon dioxide does.