Quote Originally Posted by JenniferB
I I finally found a hole about the size of the top of an eraser on a pencil. ...
Can something that small cause that much water loss, though? The hole is on the floor of the pool, and I'm not sure exactly how I'm going to be able to patch it.
Almost certainly. While not exactly analagous, a quarter-inch hole in the hull of a ship six feet below the water line would leak at the rate of 450 gallons per hour or 10800 gallons per day. (The two scenarios aren't exactly analagous because the ground beneath the pool would resist the water flow significantly, but the leak rate would still be significant.)