Reasons for staining
Check that the stain is a stain and not algae growth. Usually, algae can be dislodged with brushing.
Stains are usually caused by metals such as copper, iron and manganese dropping out of solution resulting in staining on pool surfaces.
Goldhorizons Metal Klear can be used to prevent metals from dropping out of solution, but to treat existing staining, use Goldhorizons Natural Stain Remover. Sprinkle Natural Stain Remover over the main area to be treated..
Recommended Products: Goldhorizons Metal Klear & Goldhorizons Natural Stain Remover