FISHUNT72- the tank came with a piece of PVC for the return that was split into two parts with a kind of elbow, then we added a barbed piece to each of those ends, then a piece of vinyl tubing, then a grey elbow, then a bulkhead, then the Loc-line. Kind of a mess, but it works! We were going to use hard PVC but it was such a tight fit in the overflow that we gave up on that idea! I think a simply Y with vinyl tubing would be a very good option.