LaMotte Pool Manager Water Quality Handbook - Manual (Page 43)

Stains
Color
Green/Red/Brown Blue/Green Brown/Black
Cause
Iron Copper Manganese
Treatment
• Adjust pH & alkalinity to recommended ranges
• Vigorously brush the stained areas
• Add sequestering agent and run filter
• After 12 hours, shock treat the pool
• Retest pH and alkalinity. Test hardness levels, and, if necessary,
raise to 200 ppm
Note: Take a pool sample to a pool professional for dissolved
metals testing immediately after treatment and at least once a
month.
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