Once I got my new liner installed and the water balanced to 7.4 and got the brown out with floc and sequestation I have been running the pool without adding any calcium to the fill water. What I have noticed is I have no PH rise even though I am caring for the pool in the exact same way as last year, the only difference is the CYA is lower at 30 compared to 60 and I have not added any calcium to bring the CH from 60 to the recommended level of 200-300ppm. I also haven't addded any borates to the pool and may not because I don't want to ruin a good thing!
I don't get it, the TA is the same at 90ppm as last year but my PH has been steady at 7.4 for almost a week now...it seemed I was always chasing the rising PH last year with acid additions every three days? I'm still adding about 500ml to 750ml of 10% chlorine daily to maintain 2-3ppm FC so that hasn't changed, same brand of bleach too (Chlorox).
Is the low CH the cause of this or maybe the borates? Because if it is it is awesome, I will never add calcium or borates to my pool again! Don't need it anyway, I only added calcium for the CSI balance which I assumed was necessary from a water quality standpoint. Water definetly feels softer too, both the kids and the wife have mentioned no more white flaky skin if they didn't shower after swimming.
Seems to be too good to be true?