Hello new to the forum here so sorry if I make some mistakes in how it should be formatted. Anyways I cleaned my Pentair 2000 series and cleaned pump basket etc. when I turn the pool pump on to try and fill the filter so I can can get the lid back on top a trick someone taught since getting the lid on this series is a pain. The filter won’t fill with water and struggles to pump water in. The pump is filled with water and the skimmer and pool level are normal so I don’t think it’s sucking in air. Skimmer is also free from any debris. Any ideas?