We’ve received several questions and comments about “dead’’ or inactive septic tanks due to a lack of bacterial action. Further comments and discussion from readers on this problem are welcome. Maybe we can come up with some conclusions by sharing information.Question:When pumping a tank, do you recommend leaving a small amount of effluent in the tank, or pumping it dry? Answer:As we know, the purpose of pumping the septic tank is to remove the accumulated solids. The sludge on the bottom of the tank and the scum on the top of the tank are put into suspension by back flushing
