it s best for light mineral buildup . not for large areas . the product wears out fast
It does remove the lighter build up . ( minerals )
Stain Eraser for Concrete Pools is an easy to use stain remover that eliminates most types of stains and deposits including: rust, calcium scale, or calcium deposits without using extra chemicals.
The erasers are soft and will not scratch or gouge pool surface when used properly.
Stain Eraser can be used by hand or attach to any standard telepole.
It does remove the lighter build up . ( minerals )