I came to the board wanting to get a handle on my pool chemistry and the site and experts were invaluable towards that. I inherited the pool from the previous home owner and he had used pucks for years resulting in an extremely high CYA. Last year, before I found TFP, the guess strips suggested 180 plus. This year after I drained down for closing last year and then it refilled with rain runoff before I opened it, my CYA was at roughly 120. It has come down to about 100.
The one positive of high CYA is that I have been extremely lazy the last few weeks with testing, and with adding LC. With a target range of 9-15 (or 8-13 now) but a slam level of 39+, obviously I have been able to add a gallon of LC at a time. Once a day in the heat of the summer, and every other day the last few weeks as the weather has been cooler and we've had more cloud cover. And while high CYA requires more LC, maintenance has been extremely easy! Doing the once a day or once every other day depending on weather, testing about once a week. My testing has been shown that my FC is usually in the 12-15 range, with it being as high as 20. Which is still well below SLAM level.
So while I don't recommend CYA as high as mine, I did find one small benefit to it!
The one positive of high CYA is that I have been extremely lazy the last few weeks with testing, and with adding LC. With a target range of 9-15 (or 8-13 now) but a slam level of 39+, obviously I have been able to add a gallon of LC at a time. Once a day in the heat of the summer, and every other day the last few weeks as the weather has been cooler and we've had more cloud cover. And while high CYA requires more LC, maintenance has been extremely easy! Doing the once a day or once every other day depending on weather, testing about once a week. My testing has been shown that my FC is usually in the 12-15 range, with it being as high as 20. Which is still well below SLAM level.
So while I don't recommend CYA as high as mine, I did find one small benefit to it!
