Need advice... I have a 28 ft ABG pool that I have been using a ionzer for sanatation. The pool is four years old last year it developed stains in the bootom of the pool. I almost certain it is from the copper in the ionzer. The copper level is .03 PPM which is where manufacture reccomends. The stains are large and brown almost like a tea or coffee stain color and cover about 25% of the bottom. My pool company told me all my levels were fine and to lower the PH to 6.8 or lower and the copper would go back into the water and the stains would disappear, well the oppisite has occoured the stains are even darker. A week later I shocked the pool and the stains got a little lighter, but still look horrible. I thought the ionzer was a great system till now. I need to know how I can get rid of these nasty stains. Should I just go with the BBB system I read about on this sight and trash my $400 ionzer? Any advice would be appreciated.