I'm installing a spa which will be connected to the pool equipment. The pump is an Intelliflow VF, I have a Pentair heater and a Hayward DE filter which will be bypassed in spa mode. I'm expecting to run the Intelliflow at 100 gpm. My question is on the suction fitting. I purchased 2 2 1/2" fittings ( http://www.amazon.com/Waterway-640-3580 ... B00C7UFAEC) which say they are rated at 251 gpm (seems hard to believe). My question is do I really need two of these fittings either for safety or flow? My concern that two fitting will require elbows and a T which will reduce the flow.