I have a 44000 gallon non-SWG pool. I've been testing each day to ensure I have enough Cl in there. My TA is at 70 and my Cl is around 8 on average (CYA of 60). I'm finding that no matter how much muriatic acid that I add, I cannot get my pH below 7.8 for any length of time. I know 7.8 is fine, but it's at the top of the range and I would prefer 7.5-7.6 as a landing zone. I have one jet in the deep end that points up and aerates the water and I get normal swimming use. Plaster is a couple of years old, so that's not the source.
Any thoughts on pH control? Water is clear, but I think that is due to my daily monitoring of Cl levels.