We recently purchased a home with a pool and I'm doing my best to manage the chemistry myself. To that end I bought a Lamotte Pro 7 2056 test kit to help manage the levels. I was really shocked to learn that my cya levels are way off the charts, the Lamotte kit puts it at 120, I took it to Leslie's for testing as well and the guy there put it at about 110.
My understanding is that cya is not a natural occurrence and is an additive in chlorine tablets.....except I have a saltwater pool so nobody should have been using those tablets right? The only chemicals I have put into the pool are two bottles of chlorine (one to shock and another to keep the levels up while my pump was broken and awaiting repair) and some muriatic acid just yesterday. How could these the level get so high? The previous owner has it professionally managed so hard to believe they would have pumped it up that high.
The guy at big L though it was not a problem really and his advice was to just wait till winter, drain it a bit and let it refill with rain water and measure again next summer.....but he also looked like he was 19 and I seriously doubt he has much real world experience with pool care and such so here I am asking for advice.
Overall my pool is so/so shape right now
- fcl is a bit low (2.76) -- just bumped up my swg time today and will remeasure throughout the week
- alk is high (149) -- was much higher yesterday, will continue to adjust with muriatic acid throughout the week
- ph is fine at 7.6
- ch is also really high (639). We have naturally very hard water around here, not sure what i can do about this
Advice? Do nothing / it's not a problem, wait till winter, drain immediately?