I have a Hayward three opening (four way??) valve that connects the skimmer, main drain and filter pump. I can get all main or half and half. The pool installer says I should be able to get all skimmer, but I don't think I can with it installed as shown in the photo - skimmer in left side, main in from bottom, right side to pump.
Any support or explanation will be appreciated.
BTW - I love the pool calculator and the help on this site.