Natural Chemistry Stain Free Extra Strength In stock$4599
Quick overview
- Targets metal stains Formulated for the brown, gray and greenish staining that iron, copper and manganese leave on pool surfaces.
- Ascorbic acid based Uses a blend of industrial strength ascorbic acid rather than a harsh acid wash.
- No added phosphates Removes staining without putting phosphates into the water.
- Dose by volume Applied at 1 lb per 10,000 gallons, broadcast around the perimeter with the pump running.
- Pairs with a sequestrant Natural Chemistry directs you to follow with METALfree so the released metal stays in solution.
- Hold off on shock Do not shock for at least a week after treatment, or the stain can come straight back.
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Product details
Natural Chemistry Stain Free Extra Strength is a metal stain remover built on a blend of industrial strength ascorbic acid. It lifts iron, copper and manganese staining off pool surfaces and does it without adding phosphates to the water.
How the treatment runs
Balance the water first, then lower chlorine to at least 1 ppm. Chlorine is an oxidizer and it works directly against what ascorbic acid is trying to do, so treating a heavily chlorinated pool wastes product. With the pump running, broadcast 1 lb per 10,000 gallons around the perimeter of the pool.
Then hold the metal in solution
An hour later, add METALfree at 33.9 oz per 20,000 gallons. Removing a stain puts the metal back into the water, and without a sequestrant it simply plates out again somewhere else. Add a pulp based filter aid to a cartridge or sand filter, or make sure a DE filter is properly charged, then vacuum the pool slowly and thoroughly.
Afterward
Clean the filter after 24 hours, backwashing and recharging as appropriate for your filter type, then test and rebalance. Do not shock for at least a week. Continued weekly METALfree keeps the metal from staining again.
| Brand | Natural Chemistry |
|---|---|
| Manufacturer part number | 7395 |
| UPC | 717108073958 |
| Chemical type | Stain remover |
| Active chemistry | Blend of industrial strength ascorbic acid |
| Pool type | In ground, residential |
| Dose rate | 1 lb per 10,000 gallons (38,000 L) |
| Follow up | METALfree at 33.9 oz (1 L) per 20,000 gallons (75,000 L) |
| Phosphates | None added |
| Shipping weight | 1.85 lb |
| Ships | Parcel |
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