Quote Originally Posted by MrSparkle View Post

I'm wondering, the heater is 10 yo. - Is it possible that the heat exchanger is corroding and could be the source of the metals? Putting metal into the water at a faster rate than I can remove it or keep it suspended?
Heat exchangers are a pretty common source of metal in the pool. Other possibilities are algaecides, mineral systems like the Nature2 or some other "alternative" sanitizers that contain copper.