Slow Drains and Regional Sediment: A Hands-On Repair Tutorial

https://fire2020.org/how-a-slow-attic-leak-and-mineral-caked-pipes-fooled-me-for-years/

Master Slow Drain Recovery: What You'll Achieve in 30 Days By the end of the next 30 days you will be able to diagnose whether a slow drain is caused by organic gunk, mineral sediment, or a mix of both