I just opened pool about a week ago. Everything is still off. I put in some chlorine (maybe should not have and put in some metal free and the purple stuff). Pool has stains when opening on day 1.. copper was high at 2ppm and after dropping about 2foot of water and the effects of the chemicals.. it is now 0.3 according to test made myself and leslie pool staff. There is still some copper and the brown stains I believe can come off soon if after I get it balanced in PH, ALK, etc etc. Is draining the best way to remove copper in the pool (21,000 gallons) Chlorine is also way too high.. it is slowing going down now and yes I have the Taylor Kit 2006 . I have no heat exchangers but a liner pool and a lot of trees around and it rains a lot here contributing to the copper. Should I be worried of iron? He said there was no iron in there. I have the stain free ascorbic acid 4 lbs but did not use it first since I thought maybe get everything balance and then lastly is to remove the stains later... ideas?