Heavy metals when oxidized by chlorine, produce metal stains in a swimming pool. If your pool water has been changing color to green, brown, or black especially after adding chlorine or when pH is high, that is metal stain and it's caused by presence of heavy metals in pool water commonly Copper, Iron, and Silver.
When the general cleanliness of a fiberglass pool, including heavy metal and chemical levels, especially Chlorine, pH, and Calcium Hardness, are not maintained properly, it is easy to find organic and inorganic stains in a fiberglass pool. Learn the causes and how to clean all stains in your fiberglass pool.
Heavy metals when oxidized by chlorine, produce metal stains in a swimming pool. If your pool water has been changing color to green, brown, or black especially after adding chlorine or when pH is high, that is metal stain and it's caused by presence of heavy metals in pool water commonly Copper, Iron, and Silver.
When the general cleanliness of a fiberglass pool, including heavy metal and chemical levels, especially Chlorine, pH, and Calcium Hardness, are not maintained properly, it is easy to find organic and inorganic stains in a fiberglass pool. Learn the causes and how to clean all stains in your fiberglass pool.