I suspect the reason for my question is the waterfall and high usage. We just moved in last week and have been in the pool every night since. FC has been pretty consistent. 7 FC in the evening around 5 pm and add bleach to 10 FC. But PH has been less than predictable. Trying to figure out why. I have a decent from my hot tub that is always on during pool mode 10 hours a day. Read last night about ph increasing cause of aeration so I deleted the program for the waterfall. Why does my PH continue to rise. I thought I read that most people typically add a few cups of MA but today I had to add 46 oz of MA.