
1 qt Metal Out Bottle
Product Overview
A proven choice for neutralizing dissolved metals and preventing plaster stains before they lock in.
For homeowners dealing with well water or high mineral content, Regal Metal Out in the 1 qt bottle reliably handles dissolved iron, copper, manganese, and calcium. Formulated with a concentrated phosphonic acid derivative, this treatment sequesters minerals to prevent unsightly brown or green water and scale buildup on pool surfaces. In our experience, applying this during spring openings or after heavy source-water top-offs is the standard specification for keeping plaster and fiberglass stain-free, especially in hard water regions like the Southwest where calcium hardness frequently exceeds 400 ppm.
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Benefits & What Makes It Different
Phosphonic Acid Sequestrant
Binds to dissolved iron, copper, and manganese so they can be filtered out rather than staining your pool plaster.
Calcium Scale Inhibition
Helps prevent calcium from crystallizing on pool walls and salt chlorine generator cells, especially when calcium hardness exceeds 400 ppm.
1-Quart Concentrated Formula
Treats up to 10,000 gallons for initial heavy metal staining or provides months of preventative maintenance dosing.
Product Details
Phosphonic Acid derivative
1 quart per 10,000 gallons for initial treatment; 2 ounces per 10,000 gallons weekly for maintenance.
Compatibility
- Do not add immediately after shocking the pool; wait 24 hours for chlorine levels to return to 1-3 ppm.
- Compatible with chlorine, bromine, salt water, and ozone sanitizing systems.
When To Use This
Pro Tip
If you are treating existing metal stains, use a stain identification kit first to confirm if it's iron or copper. Always lower your free chlorine to 1 ppm and adjust pH to 7.2 before applying Metal Out for stain removal, as high chlorine levels will fight the sequestering process.
Common Questions & Instructions
How do I use Regal Metal Out to clear green or brown well water?
When filling with well water, add 1 quart of Regal Metal Out per 10,000 gallons directly to the pool with the pump running. Keep the filtration system running continuously for 24 to 48 hours. Ensure your pH is balanced between 7.2–7.6 and free chlorine is kept at 1–3 ppm during treatment for optimal sequestration.
Will Regal Metal Out lower my pool's chlorine level or affect cyanuric acid?
No, this phosphonic acid-based formula does not add cyanuric acid (CYA) or alter your stabilizer levels. While it does not directly lower free chlorine, we recommend waiting 24 hours after a heavy chlorine shock treatment to add Metal Out, as high chlorine levels can degrade the active sequestering agents.
How long do I need to wait to swim after adding Regal Metal Out?
You can safely swim 15 to 30 minutes after adding Regal Metal Out, provided the pool pump is running to thoroughly disperse the chemical throughout the water. Always verify that your free chlorine is within the safe 1–3 ppm range and pH is between 7.2–7.6 before entering the water.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.



