A covered cubic tank 5.00 m by 5.00 m by 5.00 m is completely filled with water through a threaded hole in its lid. A hollow vertical pipe 5.00 m tall is screwed into the hole. The pipe has a cross-sectional opening area of 8.00 cm². If the pipe is then filled to a height of 4.00 m with an additional amount of water, what change in pressure, if any, will be read by a gauge in the side of the tank?