STUB UP
A Stub up is a pvc tee with a reduced size pointing up.
Add the tee to the suction side of the pools pump into the grey nipple, which is reduced down to ½ or ¾ in.
Maneuver the reduced part of the tee to face up.
The ½ in pipe should be straight above the water line.
Add our black hose to the ½ in pipe. You can control the amount of suction using the control valve.