Last test came out to ha e 0.1ppm iron, 0.2ppm copper. Wonder if this is something to worry about now. I didn't do test myself, took it to d tested, but wanted go see just in case, what I would need to do. I will test myself in the next few days.
In all my other tests, and those I had tested, iron and copper were always 0.
No new water was added, except rain I guess. Tap water has no iron and no copper.
Could it be from starting to heat spa?
In all my other tests, and those I had tested, iron and copper were always 0.
No new water was added, except rain I guess. Tap water has no iron and no copper.
Could it be from starting to heat spa?