Help! Under the bathtub...
We are putting in a new tub due to some leakage in the previous tub surround. When we pulled up the tub, the tub drain hooks to a larger drain. The top of this larger drain appears to be open. Is this to vent the drain? It appears that the toilet also hooks to this drain. What keeps the toilet from overflowing into the pit under these drains, if the top is open. There is about 4 inches of water in the pit below these drains. Could this be the water from the leaky tub surround? It smells awful! We are afraid to put the new tub on top of this. What should we do?