I check the PH all the time. I added sea shells to my filter the other week and it didnt even change the PH at all. I was hoping it would bring it down to 6-6.5 but the PH is always around 7. I live in the country and I'm on well water, which is 7.0 PH.

There are alot of springs around here so we have very good water. Tomorrow I will be jumping into one of them, been a long time since i've cooled down in a blue hole.