Keeps your septic system healthy. The whole objective to maintaining a properly functioning septic system is to keep the bacterial colonies healthy and multiplying in the tank, which will keep the sludge level down and reduce inconvenient pump-outs. Increases in the sludge level may overload the system and create a messy and expensive problem. Excessive use of bleach, acids, disinfectants, or other caustic cleaners can cause sludge build-up. A normal system needs regular applications of septic power to prevent sludge build-up and maintain a healthy, flowing system.