Hi,
Just opened my pool for the first time by myself. I have a DE filter and checked all the seals and o-rings. When I started the pump, I had the air valve fully opened as indicated. When I had a steady stream flowing thru the tube, I had water coming out of the bottom of the filter. I closed the air value and immediately lost all the water into the hose. Pressure is at 4PSI when it should be at 10-12. Completely tore apart the filter and the handle control and all seals and o-rings double checked and verified as in good condition and seated properly. I attempted to check the impeller but either can't locate it or can't fit my finger in it to determine if there is debris. Any suggestions?

Thanks!