Go to Walmart and pick up several boxes of 20 Mule Team Borax (laundry aisle). Add about 2 cups slowly to the skimmer while the pump is running, breaking up any clumps. Wait a few hours and retest and redose if needed until you get the pH where you want it.

Order a Taylor K2006 or 2006C from the test kit link in my signature below.

Do not add any chlorine neutralizer. The chlorine will come down on its own.