My new pool is nearly complete and I'd like to install a BlueWhite F300 Vertical Mount Flow Meter. My pool builder added a small 5' x 2' rectangular loop coming out of the High Rate Sand Filter which feeds 3 individual return lines for the pool. I believe the loop is intended to equalize pressure on the returns. My question is can I install the flow meter somewhere on the loop or would that give me a false reading. I've have attached a picture of the plumbing pad to make the situation clearer. Any help would be appreciated.