So our rented RV has two waste water tanks: one gray, one black. Water that goes into the sink and the shower ends up in the gray tank. Anything that goes into the toilet ends up in the black tank. All of it eventually ends up in a hole in a ground. The owner (or renter, in our case) of the RV gets the esteemed honor of putting it there. As I mentioned yesterday, there’s a panel inside the RV covered with switches and little lights that allows you to control and monitor features of the vehicle. This morning, after… (read more)