I want to try to avoid the ph up and down movement since I just spoke with the JM team. I want to use the Purple Stuff to control my scale problem. They indicated that I would have to keep my ph at 7.2 to clear up my problem and pretty much keep it there with maintenance doses to keep the scale away. I do not want to acid wash my tahoe blue Diamond Brite.
I draned a foot of water from my pool on 5/22/10. My fill water has a ph of 7.2, ta 200, ch 180, and tds of 380. When I did my test on 5/23/10 my results were fc 2.5, ph 7.3 (added MA to try to bring ta down), ta 80, ch 260, and cya 40. Sunday and Monday I aerated the pool to get the ph up some and on. 5/24/10 my ph was 7.4 and my ta 80. Today I turned the jets down and my new test figures are fc 2, ph 7.5, ta 90, ch 270, and cya 40. My temp is 86 and I have a swg that is only on 35 % and runs only about 8.5 hrs. JM indicated I should only have to check my ph about every 3 days, but it seems like I need to do it everyday. Am I missing somehing as for as keeping my ph level? I live in FL so it gets hot and stays hot for a long time.