Giving you some pics so you can see the setup. There is a "basket" for lack of a better term on the end of the pvc
pipe at the bottom of the pic. Dint know if that pipe adjusts in any way. Sump is directly below the overflow box. The hose is in a swirl/slide per recommendation of the LFS
*think* the skimmer is supposed to have a Venturi valve that controls how much air goes in? If so that is missing/broken. The arm that disperses the clean water from the skimmer adjusts up and down but until the aforementioned overflow accident it never made a difference what position it was in.