PRO SERIES / Commercial

Stainfree Extra Strength Commercial

Natural Metal Stain Remover

Stainfree Extra Strength is ideal for treating metal staining on all pool surfaces. Use with Pro Series® Stain & Scale Control™ and you have the ultimate 1-2 combination for stain fighting!

Stainfree™ Extra Strength Commercial Image
  • 100% ascorbic acid- premium stain fighter
  • Safely removes metal stains from pool liners and finishes
  • Quickly removes stubborn stains
  • Compatible with all sanitizing systems
Partner Products
Product Experience
  • Automatic Dosage Dispenser

    • 100rpm, 2.5oz per min at 30/74 milliliters
    • 115 VAC 50/60Hz
    • 30 psi/2.07 bar nominal
    • 9 GPD/ 34 LPD
    • Able to program up to 24 events per day

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Stainfree Extra Strength Commercial Instructions

Directions for use:

Directions for use: Spot treatment

  1. Balance pool water. pH:7.2-7.6, Alkalinity: 80-120ppm, Calcium Hardness: 200-400ppm, Phosphates: ideally below 100ppb
  2. Lower chlorine level to 1 ppm or less.
  3. If stains are near pool water returns, shut off the circulation pump.
  4. Add directly to the pool surface at the spot ofthe metal stain.
  5. Pour through a pole or tube to direct the product to the spot of the stain, or add product to a porous nylon bag and apply directly to the stain.
  6. Brush the pool surface.
  7. Re-start the circulation pump.
  8. For best results, use Pro Series® Stain & Scale Control as directed to prevent stains from reoccurring.

Directions for use:

Note: Operating the pool for a couple of days without chlorine can create an algae concern. Follow your pool dealer's recommendations on steps you can take to protect your pool from algae during this metal stain removal process.

  1. Balance pool water chemistry before using Stainfree Extra Strength: pH:7.2-7.6, Alkalinity: 80-120ppm, Calcium Hardness: 200-400ppm, Phosphates: below 100ppb. Note: Stain removal products work best when the pH is on the lower side of acceptable range (7.2)
  2. IMPORTANT: Before starting the metal stain removal, a pulp based filter aid must be added to cartridge and sand filters. DE filters must be properly charged.
  3. Lower chlorine level to 1 ppm or less (a high chlorine level or adding oxidizing agents during the process will prevent this product from working as designed).
  4. Add 1.5lbs per 10,000 gallons as close to the stained area(s) as possible with the pump off for a few hours.
  5. Before turning the pump back on, brush the pool walls and floor thoroughly.
  6. Turn the pump back on and add PRO SERIES® Stain& Scale Control to the pool water evenly around the edge at a rate of 32oz per 10,000 gallons.
  7. With the pump still on, vacuum the pool walls and floor very thoroughly.
  8. After vacuuming, clean filters: Sand filter- backwash for at least 3 minutes and then rinse for 2 minutes, Cartridge filter- clean filter and filter tank thoroughly, DE filter- backwash and recharge with DE
  9. Test and rebalance water. DO NOT SHOCK THE POOL FOR AT LEAST 1 WEEK. Note: If chlorine level is low, add small amounts of chlorine (an automated chemical controls system can be used). Do not exceed 2ppm. For salt generator pools, a granular shock is recommended instead of turning the generator to its boost (superchlorinate) function after the recommended 1 week. 10.Use PRO SERIES® Stain& Scale Control as a weekly maintenance to prevent future metal staining.

Do not swim until stain procedure is complete and normal chlorine residual is established.

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