February 18, 2016 | Categories:

  1. condition caused by too much copper not chlorine in the pool water; the copper may get into the water by the bad practice of placing trichlor tabs in the skimmer; this acidic product will cause low-pH water, which will in turn dissolve metals in the equipment; the dissolved metal (usually copper) then stains hair, fingernails and, eventually, pool walls
  2. can also be caused by keeping the pH too low or misusing acid
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