Ok, so my pool is supposed to be a thing of enjoyment, right? ARGH! I am frustrated. FInally figured out (im a beginner) that the pool has copper, my local pool store (leslie's doesn't test for this without asking so I had no clue). I then found out where it came from that's right...ME I put in algaecide that had copper in it, WHOOPS! ANyway, when I shocked (live in S FLorida so every week) The pool (diamond brite) started staining a black. I Hit the Net ini search of answers. Tried, pink stuff (did NOTHING) then found this, the Ascorbic routine. I just put some Vitamin C tabs in and the area around the tabs turned nasty black/brown. What do I do? I also tried Metal Free, the Phos Free product they make worked great for a friend of mine. WHta am I supposed to do now? Thanks a million!