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Natural Chemistry Stainfree - 1.75 lbs.

Natural Chemistry Stain Free Extra Strength is ideal for treating staining on all pool surfaces. This natural stain remover contains a blend of industrial strength ascorbic acid to quickly remove metal staining without adding phosphates to your water. It is compatible with all sanitizing systems, non-toxic, and environmentally friendly. Use with Natural Chemistry Metal Free for the ultimate 1-2 combination for stain fighting.

Product Dosage

1.75 lb per 20,000 gallons of water.


  1. Balance pool water. pH should be between 7.2-7.4. Alkalinity should be between 80-120. Hardness should be between 200-400.
  2. Remove all chlorine from pool. Minimizes the risk of algae, by removing its primary food source (phosphates).
  3. Add 1/2 bottle per 10,000 gallons around the perimeter of the pool with pump running. Brush pool thoroughly. After brushing, if stains are not completely removed add more Stain Free Extra Strength.
  4. Add a pulp based filter aid to your cartridge or sand filter. If you have a DE filter make sure it is charged properly with DE.
  5. Vacuum pool slowly and thoroughly.
  6. After 24 hours clean out your filter. For a sand filter, backwash for at least 3 minutes and then rinse for 2 minutes. For a cartridge filter, clean the filter and filter tank thoroughly. For a DE filter, backwash and recharge with DE.
  7. Test and rebalance. Do not shock the pool for 1 week.
  8. Use Metal Free as a weekly maintenance product for a stain free pool.