Originally Posted by f150k
New to 5er, do you always hook up the sewer and gray tanks at a campground? or Do you hook up and keep valves closed until the tanks are full?
If you plan on staying for a few days I'd hook up the pipes but leave all the valves closed.
The best way to dump a black water tank is when it is at least 3/4 full. That way the water pressure really works well in cleaning out the tank.
If I stay at a site for 2 or 3 days is my limit on black water tank before I dump.
Dump grey water after you dump black water. That way the pipe gets cleaned out of any chunks. If you know what I mean.
Bottom line before going home from a weekend make sure your tanks are well flushed out especially the black. Oh put some fresh water back in black tank with some chemicals so you will have fresh smell next time you go out.