I'm wondering if I need to add some Calcium to the pool to try to bring my CSI up a bit?
Here are my current numbers:
Temp= between 84-92 depending on time of day, and evaporative cooling from my fountain
We have been running our homemade fountain to bring down the pool temps. It works, but it raises the PH, making me have to add more acid. When I bring the PH down to 7.2 in anticipation of it rising again from the aeration, the CSI goes waaay low. Even at 7.5 the CSI is out of range. Also, the TA is coming down because of it and may be closer to 60 now. I got 70 when I checked it a week ago.
In pool math I see that a higher PH and higher CH will help the CSI come up. Should I add more calcium to the pool? I've been topping off the pool to account for the evaporation, but so far I haven't seen a significant increase in the CH. What would you recommend?