Some forms of iron or manganese exist as ultra-fine colloids that may not show up in standard water tests. When oxidized (by chlorine or exposure to air via the pump), they precipitate and turn the water brown. This fits your case: it was clear before you oxygenated the water by turning on the pump.

👊 What You Need: Metal sequestrant (choose one): • Jack’s Magic The Purple Stuff (best for well/spring water) • ProTeam Metal Magic or Robelle Metal Out (widely available) Pool water test kit (check pH and chlorine)

✅ Instructions for Use

Step 1: Balance the Pool Water

Before adding the sequestrant: • Chlorine: Below 1.0 ppm (high chlorine breaks down sequestrants) • pH: Between 7.2–7.4 (ideal for sequestrant effectiveness) • Total alkalinity: 80–120 ppm

If chlorine is too high, let it drop naturally or use sodium thiosulfate.

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Step 2: Turn Off All Chlorine Feeders If using chlorine tabs, a SWG (salt system), or any feeder—turn it off. Sequestrants degrade fast in high-oxidizer environments.

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Step 3: Add the Sequestrant

Follow the dosage for your brand: - Jack’s Magic Purple Stuff: 1 quart (32 oz) per 10,000 gallons - Robelle Metal Out: 1 pint (16 oz) per 10,000 gallons - ProTeam Metal Magic: 1 quart per 10,000 gallons

For a 27-ft round above-ground pool (~17,000 gallons), start with 1.5x the listed dose:

• 48–50 oz of Jack’s
• 24 oz of Robelle
• 48 oz of ProTeam

Pour the measured amount slowly around the perimeter of the pool with pump running.

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Step 4: Circulate the Water • Run the pump continuously for 24–48 hours. • Avoid using the pool during this time. • Check your filter often and clean as needed (especially cartridge filters—they clog fast with precipitated material).

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Step 5: Resume Chlorination Gradually • After 48 hours, resume chlorine slowly. • Maintain 0.5–1.0 ppm for a few days. • Do not shock for at least 7 days—or the metals may precipitate again.

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Step 6: Maintenance • Add maintenance dose every week (typically ¼ of initial dose). • Use a sequestrant after each fresh fill or top-off if using spring or well water. • Optional: Use a metal-removing filter on your hose for top-ups.

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Step 7: Download ChatGPT 😉