I am curious if Vitamin C removes copper stains or if it only removes iron stains?
This spring we successfully removed all stains from our pool using Vitamin C. It was gleaming white. Unfortunately, we didn't completely understand how things worked regarding them still being in the water and needing to a sequestering agent so they are back worse than ever. We want to buy Jack's Magic The Pink Stuff to get us through the summer. However, I just want to ensure that it is iron stains we have and not copper. I know Jack's has a test that will tell me but since I already know Vitamin C removes the stains I was hoping to skip that step (and expense).