From the Pool School article:
> Adjust your Total Alkalinity to 60-80 ppm. (This is IMPORTANT!)
My TA is 140 - Above ground pool with SWG (14k gal). The rest of the chemistry is good - with the exception that I have not tested CH yet (will do tomorrow). I expect that to be around 280-300 given last season results.
My understanding is that having a high TA with SWG will result in constantly rising pH which isn't good for the cell - especially with so much calcium in the water, worse as it gets warm.
I've seen the concept in the forum that the TA range above will help with the rising pH. Last year (first year of the SWG) I had to do a number of acid additions to keep the pH in range. From my logs, I do see that once I got to 80 (from 100) I didn't need any acid (did not have to lower for the last month of the season). So I believe in the concept. The kids like the fountain, too.
But I'm a lot higher in TA now after topping off at open, and then having a kid step on a hose and drain the pool down to the return.
Is there a way to calculate how much total acid I need to add in order to get TA down by 60 ppm (14k gal)?
How much TA rise would I get if I added borates (targeting 30-50ppm)?