Candida hate oxigen. Think the intestinal tract as an outside part of the body from mouth to anus. That enviroment is dark, humit, warm an candida love it. If this pipe get mold inside, like candida, it is going to be hard to clean it. Lot of water mean oxigen plus ozone therapies will help a lot. Candida don't like light, sun, oxigen and cold temperatures. That's what we have mold inside of the pipe.