Since CYA dissolves so slowly, it will be a few days until yours is able to be read. Because of that, you may not have any chlorine when you next test. Chlorine in unstabilized water disappears fast. Post your new results when you test again. Dichlor is acidic and may drop your pH. Keep an eye on that. I also wouldn't use any more dichlor for about a week or so until you give the CYA time to totally dissolve and see where your CYA level is at that point. Just use bleach.
Keep the pump running 24/7 while the CYA is dissolving --- at least 4 or 5 days.
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