Marbelite

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Angular’ stains are distinct from the smears or sheets associated with stains caused by water chemistry because they are caused by chemical reactions BEHIND the pool surface.

Likely Causes in MARBELITE:
  • Poor Construction/workmanship. Marbelite may be too thin in places/Gunite applied to thinly in places, resulting in oxide leaching from rusting metal reinforcing.
  • ‘Calcium Hardness’ too low for too long, OR pool to acidic for too long resulting in calcium leaching from the Marbelite, making it weaker/porous.
  • Age of the shell
Guru Recommendation:

Consult a reputable pool renovator.