There is no "normal" range for iron and copper. Do you mean they are zero? Or do you have one or both in your water? If so, I strongly encourage you to go to the "metals" forum and read through everything you can there, especially any post made by mbar (Marie) who is one of the resident experts on metals in the water around this forum. I see that you have high pH and Cl (for a CYA of 10), and I believe those are two things that adversely affect your attempts to use the metal sequestrant.

Janet