CYA Rising, PH Falling

[Watermom]

Actually, bleach is one of the cheaper sources of chlorine.

The only way to lower CYA is to do a partial drain and refill. You NEVER want to totally drain a pool, however. Since you fill from a well which can cause a whole host of other problems, I think if it were me, I'd just live with the CYA of 75 and run higher chlorine numbers to compensate for it. Like I said above, with a higher CYA like you have, you may find that you only have to add bleach every 2 or 3 days so it may not be as expensive as you suspect.

[Pamlicoknk]

Thanks so much, you have been a great help Watermom!!!

[Watermom]

You are very welcome. That is why we are here!

[Pamlicoknk]

Just a little follow-up. As you told me, I switched to bleach. My PH is still at 7.4, my has dropped to TA=100, my CYA is now 70, my CH has dropped and is now at 150 and it is taking me around one to 1.5 qts of bleach per evening to maintain my free clorine at 5 to 6. I AM GETTING THERE!!