I am building a new 2 by 4 by 40 inch RO and just have the wiring of the 1 hp motor and plumbing of the recirculation line left. My question is where to put the ricirc , should it be in front of the pump ( feed side) which is a procon, or the discharge side . I have a single post now and its on the feed side, but I feel that it might flow to the feed tank with the stronger pump . What do ya think. TIA