I opened my pool this weekend and found that my pH was on the high side (7.8 - 8.0). My TA was 60 and my CYA was 20-30.
So I added 2 cups of MA (22K gallon pool). I was hoping that would bring down the pH to 7.4 or so based on the Pool Calculator. I also started to add CYA through a nylon stocking, hoping to get that up to 70-80 for my SWG pool (about 8-9 lbs.).
However when I remeasured pH this morning, it was 6.8 - 7.0 and my TA was 50-55 (went down a little). I know that my pH will rise due to the SWG but I think it's too low and want to get it at least into the 7.2-7.4 range. I've never had to raise pH in my pool before so I am wondering the best way to do it. Should I use Borax or Sodium Carbonate? I think it should be Sodium Carbonate, since the TA is a little low and that will tend to raise the TA more than Borax. However, I've had negative experiences with Sodium Carbonate in my Spa (stand alone) as it has turned my water cloudy (usually clears in a week or so).
So my questions are...should I even bother to raise the pH, since my SWG will naturally raise it over time (I could also aerate more) ? And if I raise it, should I be using Borax or Sodium Carbonate (washing soda).
Thanks in advance for any comments you may have......this place has bailed me out on a number of occasions!