Super high combined chlorine

[themaccs]

So - is there another test I should be getting done on my water, or should I be throwing in the towel and doing a drain and refill? I have really thought for the last several days that we were almost there: I have been dosing the FC up to 20 ppm or slightly above before leaving for work in the morning, checking it as soon as I get home and trying to keep it above 16 all evening, then up closer to 20 before bedtime. FC was down to 10.5 when I got home after an extra long work day yesterday, and down to 11 when I got home today. Basically, FC has been dropping 1-2ppm/hour during the day and 4.5-5ppm overnight. CC was holding pretty steady at around 0.5 or slightly above. Then my readings when I got home from work today are as follows:
FC - 11 (down from 21 in about 6 1/2 hours - a short day at work)
CC - 1.5
pH - 7.6

TA is holding at about 160
CYA is staying at about 45.

Now have added close to 120 total gallons of bleach.

I really thought we were getting somewhere this morning when the CC barely showed up, but then that was followed by the worst readings I have had in several days this evening. We did have a fair amount of rain overnight last night, but not since this morning's testing and dosing.

So - is there another test to figure out what I am dealing with, or is it time to just drain and refill, or should I keep hammering the bleach?

Thanks for any insight you can give me!

[sonocop]

Just wanted to say good luck to you and I hope you get your problem solved soon!

[Watermom]

sonocop, nice to see you back on the forum!