I have a saltwater pool with a Zodiac chlorinator with pH module for a few years already, and the pH was pretty stable at 7.6 with an alkalinity of about 40 ppm.
Then about a month ago I made the mistake to read somewhere that alkalinity should be around 110 ppm, so I added baking soda.
Soon I discovered that my pH would rise quite fast, at about .4-.5 points a day, so I started to add HCI to lower the alkalinity again.
In the mean time alkalinity is back around the 40 ppm level, but my pH still keeps rising at about .2 points a day.
Am I correct that to stabilize the pH level I should bring the alkalinity level further down, or is there a danger adding more HCI until I reach that point?
Should I look at another cause, however to my knowledge nothing has changed other than that I added baking soda.
My CYA levels are kept below 50 ppm on purpose since my free chlorine levels test above 5 ppm. I'm using Aquachek silver 7 in 1 strips to check my chemical levels, which I understand may not be 100% accurate, but the pH level is read by the Zodiac pH module of course