Re: high CYA and phosphate reading
Here is the best guess chart:
Stabilizer . . . . . . Min. FC . . . . Max FC . . . 'Shock' FC
=> 0 ppm . . . . . . . 1 ppm . . . . . 3 ppm . . . . 10 ppm
=> 10 - 20 ppm . . . . 2 ppm . . . . . 5 ppm . . . . 12 ppm
=> 30 - 50 ppm . . . . 3 ppm . . . . . 6 ppm . . . . 15 ppm
=> 60 - 90 ppm . . . . 5 ppm . . . . . 10 ppm . . .. 20 ppm
=> 100 - 200 ppm . . . 8 ppm . . . . . 15 ppm . . .. 25 ppm
As you can see, with a cya of 150, you need a minimum of 8ppms of chlorine in your water. Since your calcium is also high, it is recommended to have between 200 & 400 in a plaster pool, I would do some partial drains and refills to get both numbers down. The only way to get rid of cya and calcium is to drain and refill. Bring your water down 1/3, and refill it back up. Test again and try to get your calcium and cya in better range. You can run a high cya pool, but you must keep your chlorine higher - if you keep the chlorine high enough you won't have any problems - you won't have to worry about phosphates. I wouldn't use cal hypo to shock - that's probably why your calcium is high. Just use regular bleach. Stop using the pucks, they add cya. So if you do some draining and refilling and switch to bleach, your water should stay clean and beautiful!
Northeast PA
16'x32' kidney 16K gal IG fiberglass pool; Bleach; Hayward 200lb sand filter; Hayward pump; 24hrs; Pf200; well; summer: none; winter: mesh; ; PF:7.5
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