Lets start by taking a slow running water hose and put it on every joint in front of the pump while the pump is running and see if the air in the pump lid stops while your putting water over any joint.

There are a few different things you need to check. you said you had a pipe fixed last year, was this on the skimmer or main drain line? is there a valve in front of the pump? if yes, turn the valve while the filter is running. this will let you know which line is the problem to start. then we can go on from there.

I like the water hose on the joints test. There seems to be 2 leaks in glued joints. There does not seemto be enough room to cut and reglue pvc.

I will check the valve thing tomorrow.

Need to get the suction up because I can't get the water clear with low suction.
Not enough suction to clear the water surface with pecan seed things. Nothing moving