Expert Verified Updated: March 2026

Iron Stain Remover (Ascorbic Acid) Calculator

Calculate the amount of Ascorbic Acid (Vitamin C) needed to remove iron stains from pool surfaces.

Quick Conclusion
The Iron Stain Remover (Ascorbic Acid) Calculator provides instant dose calculations for pool maintenance, helping you maintain perfect water balance and extend equipment life.

Technical Comparison

Stain TypeAscorbic AcidCitric Acid
Metal (Iron)EliteModerate
OrganicFairFair
CalciumPoorGood

Why Ascorbic Acid?

It's much safer than powerful acids and specifically targets iron oxidation.

Actionable Steps

Using Ascorbic Acid

Ascorbic Acid (Vitamin C) is highly effective at removing iron stains. Lower your chlorine level first.

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Safety Warning: Wait 24-48 hours after treatment before re-adjusting chlorine levels.

Pro-Tip

Ascorbic acid 'eats' chlorine. Ensure your FC is near zero before starting, and wait 48 hours before bringing chlorine back up slowly.

Frequently Asked Questions

Where to get it?

You can buy pure ascorbic acid from chemical suppliers or use specialized stain removers.

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