Stain

Problems relating to pH and total alkalinity.
Increase ph, increase TA. Reduce pH, reduce TA.
pH chemistry advice and techniques for the pool.
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Amber

Stain

Postby Amber » Thu 28 Jun, 2007 17:55

I have a fiberglass pool. This is our second summer and there is a stain in the pool. Around the edge and basically all over. It is a light brown color. I have tried everything. Please help...I would like it to look nice for July 4th. Thanks


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dynamictiger
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Postby dynamictiger » Fri 29 Jun, 2007 18:05

A brown stain on fiberglass normally indicates a high alkalinity sometimes this stain is gray sometimes brown.

Your best bet is to lower your alkalinity to 0 mg/l and let the stain come out then raise the alkalinity back slowly to about 60 mg/l.

HTH
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Backglass
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Re: Stain

Postby Backglass » Fri 29 Jun, 2007 20:25

Amber wrote:I have a fiberglass pool. This is our second summer and there is a stain in the pool. Around the edge and basically all over. It is a light brown color. I have tried everything. Please help...I would like it to look nice for July 4th. Thanks


Rub a Vitamin C tablet on the stain. If it disappears, it is a metal staion (Iron most likely) and a dose of Ascorbic Acid will clean it all off.
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