Quote Originally Posted by Guido
Ok I admit that was a stupid idea.

I brought my PH down to arround 7 the lowest I can see on my test kit. And I started aerating with a nozzle. I also used the power washer when I cleaned my deck. That works very good. I got my TA down to around 120 on Saturday and it went back up to 130 Sunday. My PH went back up to 7.6 so I added last night more acid and will aerate today more.

Guido
That's the way to do it. You rachet the T/A down, pH rises from aeration, then you rachet pH and T/A down again. You are on the right track. However, I would not be so drastic in aeration. Leaving your pool uncovered helps. Tossing in a half-dozen 10 year old boys will aerate very nicely. When I have to do it, I have a little sprayer that screws into my return, replacing the eyeball jet. It's about $20 and does the job beautifully.

I believe that you will need to add a lot of acid to your pool generally this year as the concrete/plaster cures. I don't know alot about SWGs--just some super-basic stuff. Normally, Tri-Chlor pucks are great for new concrete because they are acid, provided constant chlorine, and add needed CYA. But your CYA is almost too high.

I THINK you can use the SWG, and compensate with Muriatic Acid, but the pool guys will know better. With your PERFECT calcium levels, I'd avoid cal-hypo too. I suspect when T/A is below 125 and pH is around 7.5, your scaling will stop. But I'm speculating.