Don't mess with bicarb. Just use bleach to chlorinate; muriatic acid or bisulfate to LOWER pH and borax to RAISE it.
Do NOT add any more CYA. Do not worry about calcium UNLESS it is high.
Dose with bleach to 3 ppm before use; Dose to bleach to 3 ppm AFTER use. You'll have to experiment with doses. Start with doses of approximately 1 quart of PLAIN 6% bleach, and see where that puts you.

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