Your swimming pool is a valuable water source when faced with drought conditions and water restrictions. Remember to maintain the correct water balances and run your pool pump/filter optimally to keep your pool sparkling blue pool.

Consider alternative water sources when
topping up your pool


How to treat before adding to pool

Backwash water
  • Collect water in suitable container - Restrict access to prevent container becoming a drowning hazard
  • Calculate and add the correct amount of HTH® Extreme Flocc (NB: 1L of HTH® Extreme Flocc treats 50 000L of pool water)
  • Stir thoroughly
  • Allow to stand for 24 hours. Debris will accumulate at the base of the container
  • Add water to the pool, ensuring that the debris remains in the container
  • Resume Basic Pool Care routine
  • Divert the debris from the container into the garden
Borehole water
  • Add 2 L of HTH® Metal Remover per 50 000L pool to prevent stains on your lining
  • Follow on-pack directions
Well point water
  • Add 2 L of HTH® Metal Remover per 50 000L pool to prevent stains on your lining
  • Follow on-pack directions
Rain water
  • Collect water in a suitable container
  • Prevent roof contaminants from the container by using a device to filter out debris
  • Leave water to stand to allow debris to settle to the bottom of the container
  • Add water to the pool, ensuring that debris remains in the container
  • Correct pH and shock treat your pool water (refer Basic pool Care)
Grey water
  • Greywater is recycled bath, shower, basin and laundry water
  • Do not add Grey water to your pool, as the oil/fats/detergents will float on the surface of the pool, cause scrum on the tile and compromise the effectiveness of your pool filtration system

How to keep your pool
sparkling blue?



To prevent staining & damage to linings & fittings

  • pH: 7.2 – 7.6 in marbelite pools or 7.0 – 7.2 in fiberglass pools. Test weekly
  • Chlorine: 1 – 3ppm. Test weekly
  • Total Alkalinity (TA): 80 – 120ppm. Test monthly
  • Stabiliser (cyanuric acid) < 50ppm . Test at least once per season
  • Copper/Iron: 0. Test once per season
  • Summer: 12 hours per night
  • Winter: 6-8 Hours per night

NB: Filtering hours may vary due to pool volume and pump/filter throughput


  • Backwash the filter every 2 weeks or when the automatic pool cleaner becomes sluggish
  • Backwash the filter for 2 minutes
  • Rinse the filter for 20 seconds
  • Clean pump and weir baskets weekly
  • Brush pool walls & floor weekly
  • To treat algae, discoloured water or due to extreme conditions ( i.e. extreme weather, high bather load, etc.)
  • Test and adjust pH
  • With pump running on filter setting
  • Add 3x normal dose of HTH® Granular+ or 1 bag of HTH® Shock It
  • Test & correct pH after 12 hours. Only enter pool water when chlorine level is <3ppm.

Do’s & DONT’s

  • DO cover your pool – you can conserve up to 95% of water lost through evaporation
  • DO test your Stabiliser levels regular – if too high, switch to using HTH® Granular+ Mineralsoft which is Non-Stabilised
  • DO turn off water features in your pool to reduce evaporation
  • DO fix water leaks to prevent unnecessary water loss
  • DO reduce splash-out – curb boisterous activities in the pool
  • DON’T Leave pool water untreated – contaminated water is a health and drowning risk and a breeding place for mosquitos
  • DON’T over-stabilise your pool water – this will result in having to drain a portion of pool water. Test with HTH® Quick test strips
  • DON’T empty your pool – there is a risk that the pool surface may crack, and the pool shell may lift out of the ground
  • DON’T add “grey water” directly to your pool
  • DON’T allow pets to swim – this requires additional filtration and backwashing

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