I am doing  a renovation on an inground pool on a hous i recently bought. Got a new filter and am installing a salt water genorater.  In the process of putting all the plumbing back together and i want to set it up correct. The pool has no drain and there are three lines coming from it. One form the skimmer, one from a jet roughly 12 inches down from the coping in the shallow end the other line from the same but on the other end of the pool. I'm assuming the skimmer goes to the pump and the other too lines should be the returns just wanted to make sure.