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Common Hot Tub Water Problems

Posted in Water Treatment


Here are some of the typical problems you may experience with your hot tub water - the cause and solutions.




Problem

Cause Solution
Calcium Deposits on Shell Surface
  • Hard Water.
  • pH, total alkalinity not in balance
  • Clean with a non-abrasive Hot Tub surface cleaner
  • Test water, adjust pH as needed
  • Add a stain and scale control chemical
Cloudy Water
  • pH, total alkalinity not in balance
  • Damaged or dirty filter
  • Addition of incompatible chemicals
  • Low chlorine level
  • Buildup of oils, soap, foreigh matter
  • Add a water clarifier. Then circulate for a minimum of 30 minutes. After water has cleared, clean filter cartridge with a filter cleaner or replace if necessary.
  • Test chlorine and pH levels, adjust if necessary.
  • Change water.
Colored Water
  • Copper or iron metals in Hot Tub due to water supply or corrosion of heater.
  • Total alkalinity, pH are low
  • Add an iron/stain and scale remover.
  • Test pH, adjust if necessary.
Eye and Skin Irritation
  • pH, total alkalinity not in balance
  • Inadequate chlorine level.
  • Addition of incompatible chemicals.
  • Test pH and chlorine levels, adjust if necessary
Excessive Foam
  • pH, total alkalinity not in balance
  • Low calcium hardness
  • Inadequate oxidation
  • Addition of incompatible chemicals
  • Buildup of body oils and/or contaminants
  • Add an anti-foam agent
  • Add shock
  • Adjust chlorine level
  • Test pH, adjust if necessary
  • Take water sample to dealer to check total alkalinity and calcium hardness
  • Change water
Odor
  • Inadequate ventilation
  • Addition of incompatible chemicals
  • Insufficient oxidation
  • Inadequate cleaning of cover
  • Low pH
  • Chemical overdose
  • Test pH and chlorine levels, adjust if necessary
  • Clean with non-abrasive Hot Tub surface cleaner
  • Clean underside of the cover with a cover cleaner or mild soap and warm water
Waterline Deposits & Staining
  • Buildup of body oils, impurities
  • Use of clarifying agents with ozone
  • Hard water (minerals in water)
  • Test pH and chlorine levels, adjust if necessary
  • Clean with a non-abrasive Hot Tub surface cleaner
  • Add a scale/stain control chemical
  • Take water sample to your dealer