Expert Verified Updated: March 2026

Calcium Scale Remover (Citric Acid) Calculator

Calculate the amount of Citric Acid needed to remove light calcium scale and stains.

Quick Conclusion
Citric acid is a safe, plant-based way to remove calcium scaling. Use 1 lb per 10,000 gallons for light scaling. It is much gentler on hands and equipment than harsh inorganic acids.

Technical Comparison

Acid TypeCitricSulfamic
StrengthWeak (Safe)Moderate
Surface useAllPlaster/Tile

Actionable Steps

Pro-Tip

Citric acid is great for light scale. For heavy 'white line' scale, you may need a specialized pumice stone or muriatic acid 'wash'.

Frequently Asked Questions

How long to wait?

Wait 24 hours for the scale to dissolve before brushing.

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