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Hot Tub water quality troubleshooting

Problem Probable Cause Remedy
Cloudy Water • Dirty Filters
• Excessive oils/organic matter
• Improper sanitisation
• Suspended particles/ organic matter
• Overused or old water
• Clean filters with FreshWater™ InstantFilter Cleaner or FreshWater Filter Cleaner
• Shock spa with sanitiser
• Add sanitiser
• Adjust pH and/or alkalinity with FreshWater pH/Alkalinity Up or FreshWater pH/Alkalinity Down
• Run jet pump(s) and clean filters with FreshWater Instant Filter Cleaner or FreshWater Filter Cleaner
• Drain, clean and refill the spa
Water Odour • Excessive organics in water
• Improper sanitisation
• Low pH
• Shock spa with sanitiser
• Add sanitiser
• Adjust pH with FreshWater pH/Alkalinity Up to recommended range
Chlorine Odour • Chloramine level too high
• Low pH
• Shock spa with sanitiser
• Adjust pH with FreshWater pH/Alkalinity Up to recommended range
Musty Odour • Bacteria or algae growth • Shock spa with sanitiser—if problem is visible or persistent, drain, clean and refill the spa
Organic Buildup / Scum Ring Around Spa • Buildup of oils and dirt • Wipe off scum with clean rag—if severe, drain the spa, use FreshWater Spa Shine after cleaning to protect the spa shell, and refill the spa
Algae Growth • High pH
• Low sanitiser level
• Shock spa with sanitiser, and adjust pH with FreshWater pH/Alkalinity Down to recommended range
• Shock spa with sanitiser, and maintain sanitiser level
Eye Irritation • Low pH
• Low sanitiser lever
• Adjust pH with FreshWater pH/Alkalinity Up
• Shock spa with sanitiser, and maintain sanitiser level
Skin Irritation / Rash • Unsanitary water
• Free chlorine level above 5 ppm
• Shock spa with sanitiser and maintain sanitiser level
• Allow free chlorine level to drop below 5 ppm before spa use
Stains • Total alkalinity and/or pH too low
• High iron or copper in source water
• Adjust total alkalinity and/or pH with FreshWater pH/Alkalinity Up
• Use FreshWater Stain & Scale to inhibit metals
Scale • Total alkalinity and/or pH too high
• High calcium content in water
• Adjust total alkalinity and pH with FreshWater pH/Alkalinity Down—if scale requires removal, drain the spa, scrub off the scale, clean spa shell with FreshWater Spa Shine, and refill the spa. Add FreshWater Stain & Scale and balance the water using FreshWater pH/Alkalinity Up or FreshWater pH/Alkalinity Down
 
 
 
 
 
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