I'm building a septic tank for our 5th wheel on our property and plan to use solid pvc pipe from the trailers exit fitting to the septic entrance, which will be run with 3" pvc also. I'd like to put in a small concrete pad around the pipe where the cap will be installed. I plan on this being the future site of my wife's garden shed, which will have water and a toilet after the 5th wheel has been moved, so I've looked at caps on amazon, but I'd like to know from all of you experts what the best way to connect 3" pvc into the septic. We plan on the 5th wheel being there a couple of years, so I didn't want to use flex hose for fear of mice and wood rats chewing through it. Thanks in advance for your thoughts on this. Lee
