Since converting to BBB (or really should I just say B since everything else has been pretty much on the money), shocking once and maintaining proper FC with Walmart bleach, and testing with the TF100, I haven't had a single problem with my pool. Such a relief from when I was dumping so much money into chemicals at my pool store and still having poor results. Even went away for a few days when it was very hot, and based on my findings searching here (although I was tempted to start a new thread since that seems like a popular thing to do) came back to a crystal clear pool.
As I stated in my intro thread, the thing that sent me over the edge was being told "nobody knows why chlorine demand happens, it just does". Part of me wants to go back there and tell them the mystery has been solved.
I hope I'm not jinxing myself, but I just wanted to say how happy I am and not just use this place to state my problems.