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Waterline Buildup2020-03-12T04:07:14+00:00

Answers to Basic Pool Questions



What is it?

A greasy coating on the walls along the waterline of the pool is evidence that there is a saturation of undissolved materials in the water while a ring of rough patches may be a sign of scale. Most of the time, oils, lotions, and other organic contaminants that enter the water via swimmers cause the greasy build-up. Scale conditions are due to hard water problems or failure to correct water balance issues. Please visit the Scale troubleshooting section for more info on that problem.

To remove waterline build-up:

To prevent waterline build-up:

  1. Use a brush and OFF THE WALL® to quickly clean surfaces near the waterline
  2. Add SCALE INHIBITOR to prevent scale from forming on pool surfaces
  3. Backwash filter when necessary