ok so after some looking around my laundry room i noticed this setup. next to/behind my washer is a pvc pipe running straight up from the floor. it runs about 3 feet above the floor. there is no seal and a black hose is running from the washer into the pvc pipe. there is no seal or back-trap so i don't think it runs into the sewer...would anyone know where this pipe goes??? it looks promising that i could rig up a Y splitter and run one fork to the washer and another to an exhaust vent going to my grow. does anyone see any problems with this???