When a clog occurs, the symptoms are unmistakable: slow drains, gurgling pipes, or the dreaded backup in the lowest drains of the house. Clearing these blockages requires a tiered approach. Minor clogs in the main line can often be cleared with a heavy-duty plumbing snake or a kinetic water ram. However, if the tank itself is overfilled or the "effluent filter" is choked with debris, mechanical intervention—specifically a professional pump-out—is the only viable solution.