Need help

Despite the ammonia test results - I think you did have an ammonia issue. I think you are seeing the "end of the road" stage....you oxidized most of the ammonia when you were seeing really high CC levels and the test revealed a residual amount left. Hang in there, keep shocking, it's the only way to get rid of it. :goodjob:
 
Might actaully be getting somewhere now....Just tested 2.5 hours after adding bleach and levels were FC 20.5 and cc 1....

I also backwashed the filter nd it poured out the brownest gunk I've ever seen for avout 4 minutes.....Maybe contributing to the problem....
 
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