In my utility room, I have a second drain pipe that sits right next to the drain pipe for the washer drain line. Hanging down into it, is a 1/2" clear plastic flex tube. Last night that tube was flowing water -- not dripping but flowing some significant water. When I got this morning about 3 hours later, the flowing water had stopped. I cannot figure out where it comes from. Anyone have any ideas?

Can you track that "clear tube" back to the source? Let me know, Tom