A friend of mine just moved into his new house this past weekend. I know, I know, he is using test strips at the moment. The strips are reading nothing(brand new). The owner had been running pucks and my friend added 2 bags of shock. He added about 2 lbs. of pH up and a lb. of baking soda. 2 hours later, still no readings. How low will pH naturally drop? He says the water is crystal clear. I am in the middle of changing the liner in my pool so I am going to loan him my test kit and see if he gets anything different. It's a 24 foot round above ground. Volume calculator says 13,565 gallons. Thoughts?