Recently my pump pressure has dropped from where it was. We were told by a pool company that originally it was too high (around 20) and now it has dropped to 10. With this drop, I do not have enough suction to vacuum. It does remove some debris, but pushes some around also. In addition, the pump skimmer basket does not fill completely with water. It is about an inch short.
I have tried cleaning the filter, thinking that was dirty and obstructing the water flow. No change! I have tried running the pump with no filter cartridges to see if the filters were bad. No change! I have checked the hoses for holes and there are none.