I'm getting ready to add polyquat to my pool and just discovered that my PH is high. It looks like it is between 7.8 or 8.0. TA is 90. I shocked it a few days ago but I thought it would have gone down by now since FC is down to 9. Do I need to lower it before adding the polyquat or will the polyquat lower the PH since it lowers the chlorine when it is added?