my walmart kit says you can't test for ph with cl levels above 5. I am concerned about my ph as I have shocked the pool and am keeping it that way until the pool completely clears. meanwhile I want to get my ph right. I will order a test kit from poolsolutions but can't this week. any suggestions. my cya is high at 95-100 and I have to keep my chlorine high. my ph was 7.6 before I started keeping my chlorine high but now I really need to see what it is.