How to Balance Pool Chemistry & Treat Surface Stains

How to Balance Pool Chemistry & Treat Surface Stains

đź’§ How to Balance Pool Chemistry & Treat Surface Stains

Keep your pool clean, clear, and stain-free with expert guidance from Premier Pool & Spa


⚖️ Ideal Pool Chemistry for Stain Prevention

Proper chemical balance isn't just for water clarity—it's essential for protecting your pool surfaces and equipment. Keep your levels within these ranges:

💧 Chemical ✅ Target Range 🔍 Why It Matters
pH 7.2 – 7.8 Controls water acidity & helps chlorine work
Alkalinity 80 – 120 ppm Buffers pH swings and protects surfaces
Chlorine 1 – 3 ppm (⬇ to 1 ppm before stain treatment) Sanitizes pool water
Phosphates < 100 ppb Reduces algae risk by limiting food sources
Calcium Hardness 200 – 400 ppm Prevents etching on plaster or scale formation
Cyanuric Acid 30 – 50 ppm (outdoors) Protects chlorine from sun degradation

đź§Ş Get accurate results with our free in-store water testing
đź›’ Or shop test kits & strips


🟤 How to Treat Pool Surface Stains

Stains in your pool can result from metal exposure, organic debris, or imbalanced water. Follow this step-by-step process to remove them safely:

đź§Ľ Stain Treatment Steps

  1. Lower Chlorine to 1 ppm or Less
    High chlorine can interfere with stain removers.

  2. Turn Off the Pool Pump
    This allows the stain remover to concentrate on the stain.

  3. Apply Stain Remover
    Use 1 lb per 10,000 gallons. Broadcast near the stained area.
    đź›’ Shop stain removers

  4. Let Sit Overnight
    Allow the stain remover to work without circulation or brushing.

  5. Brush Thoroughly the Next Day
    A stainless steel algae brush works best for plaster or tough stains.

  6. Restart the Pool Pump
    Begin filtration to circulate the water and remove residue.

  7. Vacuum Settled Debris
    Use manual vacuuming for best results.

  8. Clean the Filter Thoroughly
    Rinse cartridge filters or backwash sand/DE filters to remove loosened particles.

  9. Avoid Shocking the Pool for 7 Days
    Keep chlorine under 2 ppm to prevent re-binding of any stains.


âś… Pro Tips to Prevent Stains

  • 🍂 Remove leaves & debris quickly to avoid tannin or organic staining

  • đź§Ş Use metal sequestrants and phosphate removers regularly
    Shop phosphate control

  • đź§ą Brush your pool weekly to reduce scale and prevent buildup


đź›  Got a Tough Stain? We Can Help.

Some stains may be metal-based (iron, copper), organic (leaves, algae), or from old scale. The wrong treatment can set them in permanently—so when in doubt, let us help.

đź“… Book a professional stain diagnosis
đź“© Contact us for expert advice


Premier Pool & Spa – Clean water. Clear answers. Local service you trust.