Hello fellow reefers, setting a used 180 gallon tank I picked up locally with all gear including a lifereef sump and refugium. This unit was soft plummed from the original manifold built from lifereef. I decided to modify to a hard plumbing and flex tubing combination for ease of maintenance. The supply lines(drain) is a 1 1/2 inch ( 2 of them) and returns are 1 inch ( 2 of them). I would like to know how many loc lines I can run out of my returns . My main pump is a PAN Worl NS200PS with 1740 GPH. Max head pressure of 39 ft. Could I run two loc lines out each 1 inch return lines?