Hello everyone I,m a complete noob when it comes to pools. I have a 14000g in ground pool I,m trying to get it up and running for the summer but I,m having some odd issues When I have my pool filter set to recirculate my pump basket has minimal air pockets and I have great flow coming from the return jets. My problem happens when I have the filter set to filter I lose almost all water in the pump basket and it is replaced with... you guessed it air. and my water flow is no existent, Today I had the filtration selector rebuild with all new seals and a new spring because the pool supply company was confident that was my problem, Unfortunately is was not the issue. Ive included pics of my set up if it helps. Any help is appreciated thanks.