Having issues with a brown stain, we have used ascorbic acid but once we started putting chlorine back into the pool and the stain came back. We have an in ground fiberglass pool, 20,000 gallons.
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Having issues with a brown stain, we have used ascorbic acid but once we started putting chlorine back into the pool and the stain came back. We have an in ground fiberglass pool, 20,000 gallons.