My PB said it would take over a year but I didn't believe him. Pool was put in July 1. 2013 and I have had to put in MA at least every 4 days to keep it down to 7.5. Last summer I only had to put in 128 oz of bleach, the salt chlorine generator kept the chlorine level fine. However 20 oz's of MA every 3-4 days was driving me insane. I test every day so I know all my levels are perfect but it would be nice to go awhile without having to add anything! Finally 3 weeks ago it was like a switch was turned off. I have only put in about 20 oz's during the 3 week period.
I wondered if it was the water getting colder but I don't think so, The PH levels never stabilized last winter. Is 17 months normal?