Nope ... never shocked it before today. I just brought it up to 10ppm FC. pH was 7.5 (down from before shock) and TA is still only 50-60 (in taylor test, 40 still green, 50 is clear, 60 is red).
I'll test pH later when Cl comes down.
Couple quick additional questions:
I am confused about when to switch from Dichlor to bleach. When Nitro says to add X ppm, are you actually doing a calculation with grams of Dichlor and gallons of tub water? If so, what exactly is that calc? Or just noting the measured ppm of FC, which then drops off, of course. Thanks for clarification on this.