New homeowner here! We have a 25,000 gallon IG pool with a Pentair DE Filter. Prior homeowners did not do a great job with cleaning and maintenance.
We've gotten the hang of vacuuming and back washing. Tonight I added the step of rinsing. After rinsing, I went to start the filter in the filter position and the water was slow to go through the filter and back through the returns; almost like there was a 90 second delay. Since then, the PSI has been low-around 2-3 PSI.
Is this normal or did I screw something up? I grew up with an above ground pool with a sand filter but in grounds and DE filters are new to me.