Purple stains or Copper Cyanurate is caused when the CYA levels are very high in the pool and then it reacts with copper in the pool.
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Purple stains or Copper Cyanurate is caused when the CYA levels are very high in the pool and then it reacts with copper in the pool.
If used properly, PoolRx will not cause any purple dust or stains in the pool. It’s copper cyanurat caused by high CYA levels.