BOD5 DISS(p = 0.044) decreased in all systems except the 20 mtreatment between days 0 and 42 (Table 3). On day 42, BOD5 DISS was significantly different in the 100 (p < 0.001) and 60 m(p < 0.001) treatments compared to initial conditions. BOD5PART(p = 0.337) was unaffected by the presence of or microscreen meshsize (p = 0.604, and p = 0.735 for days 0 and 42, respectively).