I have a fairly new pool with a SWCG and two waterfalls. This contributes to a PH rise of .2 daily. I have been adding acid to down it to 7.2 and bump it down when it reaches 7.8. Is this an acceptable way to manage the PH? In other words, should I be adding acid daily to keep it at a specific point or is it ok to keep it within this range by adding it every four days?