I doubt you're doing anything wrong. You have a massive FC demand right now. As FC breaks down waste CC's are always generated. So I'm not terribly shocked you have a high CC right now.
As a point of comparison here's a timeline of what happened to me:
- Nov 7th: New fill, balanced water.
- Nov 8th: Finished balancing water. Night of heavy use. Forgot to add chlorine after we got out (was a tad drunk...) and SWCG was not operating. Then I made the stupendous call to ignore it and not check it for a few days...
- Nov 11th, 9:46 AM: Did not even measure FC/CC, I assumed both would be zero. Added 11 oz of 7.5% bleach.
- Nov 11th, 2:12 PM. FC at 0.5. Added another 11 oz of bleach.
- Nov 11th, 7:42 PM. FC 3, CC 1.5. Added 9 oz bleach.
- Nov 11th, 9:20 PM. FC 9, CC 2.0. Added 4.8 oz bleach.
- Nov 12th, 7:35 AM. FC 3.5, CC 1.5. Added unlogged quantity of bleach.
- Nov 12th, 8:47 AM. FC 11, CC 1.5. Added 3.4 oz bleach.
- Nov 12th, 12:50 PM. FC 8.5. Add 5.2 oz of bleach.
- Nov 12th, 6:50 PM. FC 7.0, CC 1.5. Added 6.2 oz bleach.
- Nov 12th, 9:39 PM. FC 11.0, CC 1.5. Added 3.4 oz bleach.
- Nov 13th, 7:57 AM. FC 4.5, CC 2.0. Added 6.5 oz bleach.
- Nov 13th, 8:13 PM. FC 6.0, CC 1.5. Added 6.2 oz bleach.
- Nov 13th, 9:18 PM. FC 14.0, CC 1.5. Added 1.2 oz bleach.
- Nov 14th, 7:38 AM. FC 8.5, CC 1.5. Added 4.7 oz bleach.
- Nov 14th, 2:39 PM. FC 10.5, CC 1.0. Added 3.4 oz bleach.
- Nov 14th, 7:32 PM. FC 12.5, CC 1.0. Added 2.2 oz bleach.
- Nov 14th, 9:28 PM. FC 13.5, CC 1.0. Added 1.6 oz bleach.
- Nov 15th, 8:52 AM. FC 9.0, CC 1.5. Added 4.4 oz bleach.
- Nov 15th, 9:25 PM. FC 10.5, CC 1.0. Added 3.4 oz bleach.
- Nov 16th, 6:26 AM. FC 11.0, CC 1.0. Added 3.1 oz bleach.
- Nov 16th, 6:17 PM. FC 10.0, CC 1.5. Added 3.7 oz bleach.
- Nov 16th, 9:41 PM. FC 14.0, CC 1.0. Added 1.2 oz bleach.
- Nov 17th, 6:43 AM. FC 12.5, CC 1.0. Added 2.2 oz bleach.
- Nov 17th, 9:27 PM. FC 10.5, CC 1.0. Added 3.4 oz bleach.
- Nov 18th, 6:41 AM. FC 11.0, CC 1.0. Added 3.1 oz bleach.
- Nov 18th, 9:36 PM. FC 11.0, CC 1.0. Added 3.1 oz bleach.
At this point a few days later we did use it, and used it a few more times, until on Dec 30th I have a note that reads:
If I recall, even though I got the CC down to 1 where I normally consider it "okay to use" the smell was always worse after the SLAM than it had ever been previously at the same CC level. And unlike previously where. So that, combined with the work and reagents used to do a SLAM, led me to the conclusion that should I ever let something like this happen again I would immediately dump and refill, and not bother trying to do a SLAM.
This was the basis for my recommendation to avoid SLAMing and do a dump and refill. Your extremely high FC demand that backs up my recommendation to dump and refill.
One last note: Is your CC reagent clear or has it gone yellowish?