Quote Originally Posted by Pool_Mike
Sales rep says its just like the spring water that flows in the mountains and claims that is why no alge is effected by it and it prevents it.
Oh, I *love* that quote. It's so typical of 'mineral' (copper) and ozone marketing: all image and feeling, with no real substance!

. . . Almost by definition, "spring water" does NOT "flow in the mountains". Spring water usually emerges at the BASE of mountains and hills; mountain creeks are filled with surface runoff, or from shallow 'springs' that are really nothing more than runoff that sank in a few feet, hit rock, and ran till it came to the rock's edge.

Oh yes . . . there's plenty of algae and biofilm in mountain creeks, as anyone who's tried to avoid slipping when crossing has found! There's often not much planktonic (ie, free-floating) algae due to low temperatures and a lack of nutrients.

Ben