Can't get chlorine down!

[tenax]

just for reference, PB...my chlorine a week after superchlorinating is still at 12ppm. so much for hoping to start my autopilot by tomorrow

[poolbee]

Tenax,

The last time I superchlorinated it took over a week for it to go from 15 I think it was, to 6. Then it has stayed between 6-7 for about 2 weeks. I turned off the chlorinator completely and when I checked yesterday it was down to 5 finally.
I have only shocked 2 other times, and with bleach, and had no problem. This last time I used some cal-hypo my builder left me.
I know I will get replies saying it makes no difference(already have on another post), but I'll never use that again. Success with bleach-no reason to change.