The pool is beautifully clear since we drained and cleaned it a couple of months ago to get rid of calcium deposits that had formed over the last three years since it was built. Because I suspected the problem was down to high pH, I bought a Hanna digital tester to get a more accurate picture of what is going on. After a month of daily testing, I'm finding that the pH increases by about 0.1 per day and that I have to add HCl about every 6 days to keep it in the range 7.2 to 8.0 - 1 litre of acid brings the pH down about 0.8. The pool is only being used lightly at the weekends at the moment.
I don't read of anyone else having to add HCl so frequently so I'm guessing I'm missing something and any advice would be much appreciated!
I don't read of anyone else having to add HCl so frequently so I'm guessing I'm missing something and any advice would be much appreciated!