I recently just got a new 1.5HP Hayward pump unit to replace my existing unit which was leaking. This is hooked to a tank with the DE grids (Splash-Pak) inside. With our original pump with a fresh DE coat, the pressure was 13.5 psi. Then when the output jet was weak (time for a DE change) the pressure would be about 16.5. With this new pump, the beginning pressure is about 16.5 and it gets to about 21 when the DE needs changing. I don't know the original HP of my motor since it was never printed on the label. It was a Magnetek motor but I haven't been able to find any documentation on it. What are some signs that this new motor might be too strong? Thanks.