Cal Spas LES Owner's Manual page 41

Problem
Organic Buildup/ Scum Ring
Around Spa
Algae Growth
Eye Irritation
Skin Irritation/ Rash
Stains
Scale
Probable Causes
• Buildup of oils and dirt
• High pH
• Low sanitizer level
• Low pH
• Low sanitizer level
• Unsanitary water
• Free chlorine level above 5ppm
• Total alkalinity and/or pH is too
low
• High iron or copper in source
water
• High calcium content in water -
total alkalinity and pH too high
Possible Solutions
• Wipe off scum with clean rag
- if severe, drain the spa, use a
spa surface and tile cleaner to
remove the s cum and refill the
spa
• Shock spa with sanitizer if
problem is visible or persistent,
drain, clean and refill the spa
• Adjust pH
• Shock spa with sanitizer and
maintain sanitizer level
• Shock spa with sanitizer and
maintain sanitizer level
• Allow free chlorine level to drop
below 5 ppm before spa use
• Adjust total alkalinity and/or pH
• Use a stain and scale inhibitor
• Adjust total alkalinity and pH - If
scale requires removal, drain
the spa, scrub off the scale, refill
the spa and balance water
• Use a stain and scale inhibitor
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