I have got a customer that just re-plastered a pool, and the water he is putting back into the pool is from a well that has lots of iron and tannic acid.  I know he could call a water truck to fill the pool, but he is not interested in that.  The iron and tannic acid has left some brown stains on the pool plaster.  He could use some of the Jack's stain remover, but I don't want it to etch the new plaster.  Any other suggestions or input?

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