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FAULT
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CAUSE
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REMEDY
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Cloudy, dirty green coloured water
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Algal growth due to inadequate chlorination or failure to superchlorinate regularly.
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Filter and vacuum out the solids. Check and correct pH and TA. Run the filter continuously and backwash when necessary. Clarify water with Altraswim Pool Clarifier
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Cloudy, dirty water
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Blocked/ineffective filter or poor circulation or inadequate chlorination
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Check filter and rectify if necessary. Superchlorinate and maintain recommended free chlorine residual. Clarify with Altraswim Pool Clarifier
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Cloudy clean water
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A high pH value. Total Alkalinity or Calcium Hardness level
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Check and correct accordingly. For pH or TA use Altraswim pH reducer and clear water with Altraswim Pool Clarifier
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Coloured (green) clear water
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Suspended algae. Lack of algicide.
Ineffective filteration
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Superchlorinate using Altraswim Sodium Hypochlorite* or Altraswim Calcium Hypochlorite (Granular Shock Chlorine).
Check filter and clean
*Call for further information
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Algal growth
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Insufficient chlorination or lack of algicide
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Brush to remove clinging algae then super chlorinate as above
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pH difficult to adjust
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Buffering action caused by too high Total Alkalinity
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Test TA and adjust using Altraswim pH reducer
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pH erratic
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Lack of buffering action due to low Total Alkalinity
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Test TA and adjust using Altraswim pH Increaser
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Eye & skin irritation, corrosion of pool and fittings, reduced chlorine residual
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pH too low
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Adjust using Altraswim pH Increaser
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Scale formation, water becomes cloudy. Filter is less effective
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pH too high
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Adjust using Altraswim pH Reducer
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Difficulty in maintaining chlorine residual
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In outdoor pools this could result from the use of unstabilised forms of chlorine (such as Sodium or Calcium Hypochlorite)
Build up of pollution from bathers, arising from insufficient chlorination,lack of superchlorination or excessive bather load
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Stabilise water using stabilised form of chlorine such as Altraswim Stabilsied Chlorine Granules or Altraswim Chlorine Tablets
Superchlorinate using Altraswim Sodium Hypochlorite
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Corrosion of pool fittings
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Low pH
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Check pH and add Altraswim pH Increaser
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Coloured (blue or brown) clear water
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A small amount of metallic impurities in the water supply
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Use a sequestrant agent and use Altraswim Pool Clarifer to clear water
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Scaling
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High pH, TA or Calcium Hardness
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Check and rectify
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