Oh what I meant by shocking was using CalHypo.

Anyway last night I have used 2 lbs 56% CalHypo and let the pump run, this morning it is clean and clear
Due to lack of CYA chlorine from CalHypo tends to disappear by late afternoon, pool receives direct sun for at least 8-9 hours a day and I am in Southern AZ. But then I use it again same night (1 lb bag) and let the pump run. Meanwhile I am also using the tablets (TriChlor) to build up the CYA levels

Here are the test results as of 1 pm today (this after using 2lbs CalHypo last night after hit by a rain storm).

FC 3.8 ppm
CC 0.1 ppm
pH 7.6 (down from 7.8)
TA 120 ppm (unchanged)
CH 140 ppm (up from 110)

For the filter I have Clean & Clear plus 320 (pentair) with new cartridges.

Thanks
Matt