Today I called Jacks Magic and spoke with a technician named Matt. He raised a concern as soon as I mentioned the precipitates I had observed the second day into treatment. He said this may indicate the calcium harness (CH) went above 400ppm and that above this the CH renders the Jacks Magic No2 inactive. Apparently I should have listened to the initial technician who recommended a partial water change before starting the treatment since my CH was at 620ppm and TDS were 3,500ppm. At this point the tech asked that I get a water workup from Leslies so he can advise on the next steps. He also said pH may have gone above 7.0 which also would keep the product from working. We didn't even discuss temperature, but I suspect that is working against me as well - my last measurement of temp was 58F and Jacks instructions 65F or greater. My plan now is to test the water myself first and see where I'm at, then I'll get a workup from Leslies. I may be in a situation of wasting about $150 on chemicals and still need to drain or partially drain the pool to get my CH and TDS into normal ranges while reducing my copper concentration as well.
*EDIT* checked a few levels. pH is still below 7.0 (bright yellow). TA is down to less than 10ppm. CH is too high to measure... got passed 1,000ppm and decided I should save reagant. Going to get a pool store test tomorrow and go from there.