Step 4 · Insert Bladder into Drain Pipe
This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.
With the cleanout cap removed, begin feeding the bladder and the attached garden hose into the drain pipe. Push the hose deliberately, guiding the bladder into the pipe. Continue feeding it until the bladder is well inside the pipe, at least 6-10 feet if possible. The goal is to get the bladder past any immediate bends or wyes near the opening and closer to the actual clog. The bladder must be fully contained within the pipe for it to inflate and seal correctly.