Pool Store did test for copper & iron which were zero. Water temp is between 70-76. I have already turned off SWG and will check CL twice a day and add liquid CL as necessary to maintain 3.0. Yes, PHO was Phosphates, which was high because of high winds with leaf and catkin debry. In spite of keeping pump on all the time during those periods and manually vacuuming, I guess it still crept up. Pool store tried selling "Phosfree". I thought it was a rip, but maybe I was wrong?