REGAL CHEMICALS 2-1/2 lb Stain Out
Product Overview
Formulated to lift set-in iron, copper, and manganese stains off pool surfaces without draining.
Packaged in a 2.5-lb container, Regal Stain Out removes copper, iron, and manganese stains from pool surfaces without draining. It works across plaster, vinyl, fiberglass, and aggregate finishes by dissolving oxidized metal deposits back into solution. Broadcast 1.25 lbs per 10,000 gallons around the pool perimeter for standard treatment, or use up to 2.25 lbs per 10,000 gallons for stubborn discoloration. Order today to lift mineral discoloration and restore your pool finish following the label application directions.
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Benefits & What Makes It Different
Dual-Action Reducing Agents
Contains 65–75% sodium sulfite and 15–25% sodium erythorbate to break down tough mineral and metal stains.
Variable Dosage Rates
Dose at 1.25 lbs per 10,000 gallons for recent marks or up to 2.25 lbs per 10,000 gallons for stubborn, set-in staining.
Universal Surface Safety
Safe for direct or perimeter application on plaster, vinyl liner, fiberglass, and aggregate pool finishes.
Product Details
Sodium Sulfite 65-75%, Sodium Erythorbate 15-25%, Sulfuric Acid Disodium Salt 1-3%
1.25 lbs per 10,000 gallons for normal stains; 2.25 lbs per 10,000 gallons for stubborn stains
Compatibility
- Do not apply shock treatments for at least 72 hours after application
- Wait 24 hours before rebalancing pH to 7.4–7.6 and total alkalinity to 80–120 ppm
- Compatible with plaster, vinyl, fiberglass, and painted interior finishes
When To Use This
Pro Tip
Lower free chlorine to 0–1 ppm before adding Stain Out, as active chlorine neutralizes sodium sulfite immediately. In hard water areas or well-water pools, follow this treatment with a metal sequestering agent to hold dissolved metals in suspension before bringing total alkalinity back to 80–120 ppm.
Common Questions & Instructions
How do I apply Regal Stain Out to localized spots?
Sprinkle the granules directly over problem areas wearing rubber gloves, or broadcast 1.25 lbs to 2.25 lbs per 10,000 gallons around the perimeter for general staining.
When can I shock the pool after adding Stain Out?
Do not apply shock treatments for at least 72 hours. Adding oxidizers too soon neutralizes the active reducing agents and forces dissolved metals back onto pool surfaces.
When should I rebalance water chemistry after treatment?
Wait 24 hours after application, then adjust pH to 7.4–7.6 and total alkalinity to 80–120 ppm before resuming regular maintenance.
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.
