I've been mostly lurking and absorbing info around here for the last several months while my pool was being built and since it has been up (and down) and up again.
I've gotten myself a TF100 kit and am in the process of getting my chemistry sorted out. Water looks great so far.
However, I've got two things I'm going to be fighting, based on what I've read. First, my fill water comes in at a pH of 8.4+ and a high TA to go with it. In addition, by design, between my spa spillway and rock waterfall, my pool gets a lot of aeration - which raises pH.
So, I see that I'm probably going to be buy stock in a muratic acid plant to keep my pH in line. But I'm curious about a couple of points.
Adding muratic acid will lower the pH and TA.
Aeration raises pH but doesn't affect TA
This tells me that if I keep adding acid to counteract the aeration, my TA will keep dropping. So far, my TA and pH are still on the high side, but eventually I should get to a point where my pH is good, but my TA is very low. Is this something that I should be concerned about? I haven't come across anything here that suggests a way to raise TA that doesn't also raise pH.
On a related note - I've read in the school that aeration raises pH. How does that work? And, assuming I ran my waterfall constantly and added no acid, what is the limit of how far aeration alone would raise the pH of my water?