Closed loop Front
Oceans Motions 4 way HD unit connected to an Iwaki MD-55RLT. Spa flex is used for the two front returns which run through the overflow to return to the lower portion of the tank. Rigid PVC is used for the two outer arms which return to the top of the tank. All returns are split into a Loc-Line Y to create more flexible and diverse flow through 8 ports.