I have been using this forum since I moved into my house with a pool already installed since last year. For the most part, I believe i had everything under control. I am in Houston with very high pH fill water and my SWG tends to raise my pH quite a bit. I was in the process of lowering the pH and TA to see if I could get it to stabilize, it tends to always run at 8.2 and TA 80. I had pH down to 7.2 and TA at 50, but kept rising so i gave up and just went back to having pH 8.2 and TA 70-80. Now I am seeing some white marking on the walls. I started checking my CSI, which I admit I didn't before, and now I see that with my pH at 7.2-7.4 and TA at 50, I was CSI<-.7, thus what I see on the walls must be the plaster etching Calcium out. OK, so now my question...When i put in pH 8.2 and TA 60-80, which is what it will run at if I don't do anything, this says CSI = 0.3 which is less than the max of 0.6. I was all about getting my pH low, because i read that I should, but is this telling me that I don't need to? So long as I stay below CSI=.6, I am ok?
ok as I read more...i realize what I posted above probably isn't good, I need a CSI near 0, so 0.3 isn't ok. I guess then I need to keep pH around 7.8 with a TA of 80. My pool won't stay like this so I guess I'll just have to add acid every couple of days. Am I understanding things right? I had hoped to get my TA low enough so my PH rise would "lock in" as I have read on here often, but in doing so I will get my CSI way too low, so maybe i just need to maintain manually every few days with acid.