adjust cya before or after shocking

[Kateyru]

Yesterday morning (6 am) FC was 14 and CC = 0. I did not add bleach (sorry--too early and too much of a hurry to check Dave's post)). Pump is running 24/7 but SWG is still off. Test results this morning were FC = 10 and CC = 0. Water looks good. Do I need to add bleach and get back over 15 again?

[BigDave]

Not necessarily. Test FC tonight when the sun is off the pool, and again early tomorrow morning before the sun is on the pool.

If FC is the same or within 1 ppm then you're done!
If FC drops by 1+, we'll need to get back to shock level.

Do you still have a supply of dichlor?
Pump / filter on - SWCG off.
How's your filter pressure?

[Kateyru]

I have 3 1/4 lbs. of dichlor. Filter pressure remains steady. Do I need to leave pump on 24/7 till tomorrow am?

[BigDave]

Is filter pressure steady at the same pressure as clean or higher than clean but not high enough to backwash yet?
Let's leave the pump on.

[Kateyru]

pressure is same as clean

[BigDave]

Great! Looking forward to hearing that tomorrow morning's FC level is the same as tonight's.

[Kateyru]

fingers crossed...will email you in the am!

Morning! 7 am test results are FC = 7 and CC = 0. Pump is on but SWG is off. Let me know next steps.
Thanks!!
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Just realized that I didn't give you results from late yesterday afternoon. They were FC = 8 and CC was <.5 but not quite 0.