When you say you have an in-line chlorinator I'm assuming you have the kind you add Tri-Chlor pucks to. If, in fact, you mean you have a Salt Water Generator of chlorine, then what follows is NOT relevant to you.
He's right. Unbelievable that I'm saying that but it's true.
I would STRONGLY suggest you drain about half the water out of the pool and refill. Then turn off your inline-chlorinator and stop using chlorine pucks. Your CYA is excessively high and the pucks keep adding more and more CYA.
Drain half and CYA AND Calcium should be cut in half. CYA at 50 is a good number. Calcium at 220 is near the low end for a concrete pool (200-400) but OK.
You should now chlorinate with plain bleach or liquid chlorine (same thing, different package). Or make the break and replace the inline-chlorinator with a Salt-Water Generator for chlorine (see folks? I'm not against SWGs).
Using bleach you may see your pH start to rise. You may not (the pucks are VERY acid!) If so, just use muriatic acid to lower it.
But if you decide NOT to drain and refill, you will need to maintain your chlorine level between 10 and 15 ppm (I believe). That's hard to measure unless you have a FAS-DPD test kit for chlorine. Your calcium will still be high but it may come down as you do backwashing and replacing of water.
But if FAC is your chlorine level you are about to get in big trouble. You need to shock your pool NOW. I would add 4 gallons of regular bleach--5.25% ( just to get your chlorine to 12 or 13, at a minimum--which is your maintenance level. But I would seriously suggest you add 8 gallons of regular bleach to actually shock it.
IMHO
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