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Guest Tim

Brown Foam Scum

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The other day I went to check on the Spa and noticed a brown foam scum line along the water line in the Spa. It was like pine tar when I tried to remove it. About 2 months ago we switched to soft soak. Test strips looked good once a week when water was tested. What causes this problem and how to fix it is my question. I've seen this problem refered to, but there seems to be a difference of answers to this issue. Thank you for any answers to this question.

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its the sanitizer and PH. When the PH is high, and the sanitizer is high, it clumps. I had the same problem. Adjust the PH and keep the sanitizer within normal range. Good luck.

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welcome to one of cons of non-chlorine. try cutting back on your dosages, especially if your running slightly on the high side of tolerances.

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