Nice picture. you did all that yourself? I think you are getting zero pressure because you still have the multport set to recirculate. First, turn the filter off, never change the multiport setting with the filter on. Then set it to filter. You will have to bleed the air out of the filter with the valve under the gauge. Leave it open until water comes out, and don't stand in front of the opening, unless you have your bathing suit on.