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How can you remove a blue-green stain that may have been caused by metal in your spa?
Wiki User
∙ 15y ago
The blue/green stain is copper from your heater. Your pH and alkalinity are too low. You have to call someone (with experience) to drain and do a light acid wash to remove. Test water more frequently and adjust as needed to avoid same situation. Your spa will only handle a few acid washes before you have to re plaster. Your heater will not tolerate low or high pH.
Wiki User
∙ 15y ago
Wiki User
∙ 16y agoIt may not be the "metals". How long are you running the filter and pump? When was the last time you cleaned the filter ( the large tank)? Have you added chlorine in large enough doses? Have you adjusted your pH to the right levels?
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