pH gives you a natural compatibility in some regards, but even a pH of two or three being added to a chemistry of seven can cancel out each other. What ends up happening is you can have compatibility issues with that pH shift, also with the components themselves. In addition to that, every cleaning chemistry, if it’s engineered correctly, is not going to have a major shift and it should last for the life of the bath meaning that regardless of how much flux that you put into your bath, you should have consistent compatibility through the life of that even if cleaning slightly drops off.