I'm trying to figure out what the PH balance "MEANS". I know when my Chlorine is low I can get Algae, but what does it mean when the PH is HIGH or LOW? I have tried to keep it within reason, as my tests show, but even when I add the Muriatic acid, it doesn't SEEM to be doing anything. The readings go up or down but the pool still FEELS the same. No funny smells, algae, skin issues, hair issues, clarity problems, so what does a higher PH actually mean for me and my pool. Thanks in advance for your consideration to this matter.