Pool Stains & Scale

Pool stains and scale can look similar from a distance, but they often have different causes. Staining may involve metals or organic material, while scale is usually a mineral-deposit problem tied to water balance and saturation.

Identify the problem before treating

• Stain: discoloration on a surface that may be associated with metals or organic material.
• Scale: a rough or crusty mineral deposit that forms on surfaces or equipment.

What to check

Test the water parameters relevant to balance and mineral buildup. Consider the source of your fill water, recent chemical changes and whether deposits are also appearing on equipment.

Preventing repeat problems

Consistent water balance, circulation and early treatment of metal or mineral issues are more effective than waiting for heavy deposits to form.

Explore BubbyShine Stain & Scale Control and read How to Prevent Stains and Scale in Pool Water.