First time poster and first time pool owner. This is an outstanding site and I look forward to using it quite a bit as a new pool owner. My pool is under construction right now and I have a question about the plumbing for my raised 8 foot spa with 6 jets. I have 3 inch pvc pipe coming from the spa drains going to the pump where it reduces down to 2 inches to go through the pump, filter and heater and then the builder has planned (not done yet) 2 inch pvc pipe back to the spa which is 90 feet from the equipment pad. My question is should I increase the return pipe size after the heater to 3 inch pipe like the suction. Builder states I wouldn't gain much since 2 inch is running through the pump, filter and heater. I am very new to this and have researched this for multiple days and can't seem to figure out what is the best option.