Natural Chemistry Stainfree Extra Strength

Natural Chemistry Stainfree Extra Strength

Regular Price: $49.99 | You save 30%
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Stainfree Extra Strength quickly removes metal staining without adding phosphates to your pool water. Stainfree Extra Strength is all-natural and contains an industrial strength ascorbic acid that is compatible with all sanitizing systems.

Directions for Use:

  1. Balance pool water chemistry.
  2. Lower chlorine level to 1ppm (part per million) or less.
  3. Important: a pulp-based filter aid must be added to cartridge and sand filters and D.E. filters must be properly charged before you start the stain removal or water discoloration process.
  4. For Surface Staining: add 1lb Stainfree Extra Strength per 10,000 gallons of pool water as close as possible to the stained area with the pump off overnight.
  5. For Water Discoloration: with the pump running, add 1lb Stainfree Extra Strength per 10,000 gallons of pool water evenly around the edge of the pool.  Let circulate for one hour, then shut the pump off and let sit overnight
  6. Brush pool walls and floor thoroughly before turning the pump back on.
  7. Turn pump on and add Metalfree evenly around the pool edge at the rate of 17oz per 10,000 gallons of pool water.
  8. Keep pump on, vacuum pool walls and floor.
  9. Clean filter. Sand Filters: backwash for at least 3 minutes, rinse for 2 minutes. Cartridge Filters: clean filter and filter tank. D.E. Filters: backwash and add fresh D.E.
  10. Test and rebalance water. Do not shock the pool for 1 week.  If chlorine level is low, small amounts of chlorine can be added.  Do not exceed 2ppm.
  11. Use Metalfree as a weekly maintenance at the rate of 4oz per 10,000 gallons once a week.

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