The required volume of sludge in the MUR is 151 m3 , the computed available sludge based from the settled sludge is 74m3. The amount of sludge to be added therefore would be 77 m3. I did not include in the calculation the floating sludge because eventually the floading sludge will be carried with the effluent.. I will call you up once you have already seeded a new sludge to the MUR to discuss the initial loading, initial flowrate, proper operation of the MUR to acclimatize the newly seeded sludge.